signs of trigonometric ratios - activity v1
DESCRIPTION
MathsTRANSCRIPT
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Signs of Trigonometric Ratios - CONTEST
Chapter Name: M3 - Trigonometry Topic: M3.1 – Angles and the Unit Circle
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RISE FIGHT CONQUERTHE CROWN OF TRIGONOMETRY
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• Throughout history, there has been a battle of words between the Egyptians and the Indians, claiming the rights for the invention of Trigonometry.
• The Egyptians have sent their smartest warriors to fight it out with the Indian equals.Avanti needs to send a warrior to represent India and we have set up a contest to identify the most capable individual who can defend India’s crown of Trigonometry.
• There will be 5 internal rounds ( ROUND 1-5) between you all and after each battle one warrior will advance to the final round
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Rounds 1 to 5 – Last Person Standing!• All students will initially be standing in the classroom
with voting cards.• There will be a trigonometric ratio on the screen, with
four options (positive, negative, zero, undefined) • Students will get exactly 30 seconds to finalize an
answer, and everyone will vote simultaneously after 30 seconds.
• Those who get the answer wrong will be eliminated and will sit down, and the remaining students will attempt the next question.
• This will continue till there is a last person standing! This student will qualify for Round 6 (explained on next slide)
• Then Round 2 will start with everyone standing again, and so on for 5 rounds till we have 5 unique winners.
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Round 6 – Battle of the WARRIORS!
• There will be questions in this round. Each question will have points for the correct answer, and point for the incorrect answer.
• The warriors will stand in their respective places, and will not be allowed a paper and pen, and will only have voting cards. They will be given exactly seconds per question.
• Voting is optional at the end of seconds.• The teacher must create a scoreboard on the
whiteboard to track the leader throughout the game.
• All other students must attempt the questions too for practice but they must maintain silence and honor the game.
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Who will be the warrior to represent Avanti and India?
Aaj dekhenge, kisme kitna hai dum!
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PRIZESThe overall winner will be awarded
a Mathematics book of his / her choice from Avanti’s library!
The top five students will get chocolates of the Teacher’s choice
All in all, Trigonometry wins
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For the Teacher
• There are 50 questions for the first 5 rounds. If the 5 rounds get completed before the 50 questions are exhausted, do not continue Round 6 with the next question in sequence. Move to slide 110 for the questions for Round 6.
• In case the 50 questions get exhausted before we have 5 winners, move to Round 6 with as many winners that were identified so far.
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Rounds 1 to 5
Students, get voting cards ready!
Teacher, get stopwatch ready!
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Question 1
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 1
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 2
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 2
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 3
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 3
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 4
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 4
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 5
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 5
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 6
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 6
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 7
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 7
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 8
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 8
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 9
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 9
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 10
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 10
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 11
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 11
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 12
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 12
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 13
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 13
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 14
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 14
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 15
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 15
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 16
tan(245)A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 16
tan(245)A.PositiveB.NegativeC.ZeroD.Undefined
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Question 17
Sin(140A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 17
Sin(140A.PositiveB.NegativeC.ZeroD.Undefined
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Question 18
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 18
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 19
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 19
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 20
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 20
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 21
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 21
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 22
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 22
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 23
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 23
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 24
cos(360A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 24
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 25
-sec(-93A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 25
-A.PositiveB.NegativeC.ZeroD.Undefined
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Question 26
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 26
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 27
-A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 27
-A.PositiveB.NegativeC.ZeroD.Undefined
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Question 28
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 28
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 29
-A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 29
-A.PositiveB.NegativeC.ZeroD.Undefined
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Question 30
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 30
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 31
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 31
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 32
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 32
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 33
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 33
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 34
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 34
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 35
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 35
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 36
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 36
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 37
-A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 37
-A.PositiveB.NegativeC.ZeroD.Undefined
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Question 38
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 38
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 39
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 39
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 40
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 40
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 41
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 41
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 42
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 42
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 43
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 43
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 44
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 44
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 45
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 45
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 46
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 46
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 47
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 47
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 48
tan(A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 48
tanA.PositiveB.NegativeC.ZeroD.Undefined
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Question 49
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 49
A.PositiveB.NegativeC.ZeroD.Undefined
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Question 50
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 50
A.PositiveB.NegativeC.ZeroD.Undefined
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Round 6! – Battle of the Warriors!
(Remember, +2 and -1)
Good luck!
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Question 1
+ + A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 1
+ + A.PositiveB.NegativeC.ZeroD.Undefined
Sec90 = undefinedAny addition/subtraction to an undefined value will not make any difference
Hence, the overall value ( and so sign) is Undefined
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Question 2
Sign of isA.PositiveB.NegativeC.ZeroD.Undefined
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Answer 2
Sign of isA.PositiveB.NegativeC.ZeroD.Undefined
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Question 3
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 3
A.PositiveB.NegativeC.ZeroD.Undefined
Since , thus the sign will be negative.
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Question 4
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 4
A.PositiveB.NegativeC.ZeroD.Undefined
We can write as
(
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Question 5
Sign of (1- sec3240isA.PositiveB.NegativeC.ZeroD.Undefined
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Answer 5
Sign of (1- sec3240isA.PositiveB.NegativeC.ZeroD.Undefined
1 – sec3240 = 1 - sec(360
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3 more questions to go!
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Question 6
Sign of cosec(15isA.PositiveB.NegativeC.ZeroD.Undefined
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Answer 6
Sign of cosec(15isA.PositiveB.NegativeC.ZeroD.Undefined
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Question 7
Sign of isA.PositiveB.NegativeC.ZeroD.Undefined
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Answer 7
Sign of isA.PositiveB.NegativeC.ZeroD.Undefined
= = undefined = undefined
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Question 8
A.PositiveB.NegativeC.ZeroD.Undefined
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Answer 8
A.PositiveB.NegativeC.ZeroD.Undefined
When no unit is specified, the angle is in radians.1 radian is close to while is close to Hence,
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Hope this was fun! Congrats to the winners!