reachback trigonometry
TRANSCRIPT
Day 1.notebook June 28, 2017
Reachback TrigonometryDamien has climbed 18 metres up a tree. He sees Thomas on the ground and calculates the angle of depression to Thomas to be 42°. What is the horizontal distance from Thomas to the base of the tree? Round your answer to the nearest hundredth of a metre.
19.99 manswer
Day 1.notebook June 28, 2017
Section 4.2IRRATIONAL NUMBERS
Pages 207-212
Section 4.1Estimating Roots Pages 204-206
Day 1.notebook June 28, 2017
These are rational numbers These are irrational numbers
√100
√√
√
0.25964
3 8
56
0.82
√0.24
√
√2
13
√93
√124
WHY do we put them in these categories?
Day 1.notebook June 28, 2017
Rational Numbers are any numbers that can be written in the form , where a and b are integers and b ≠ 0.
Rational numbers have terminating or repeating decimals
ab
Irrational Numbers are all numbers that cannot be written in the form , where a and b are integers and b ≠ 0. a
bIrrational numbers have non-terminating and non-repeating decimals.
Ex:
Ex:
Day 1.notebook June 28, 2017
Are these numbers rational or irrational?
1
Û
A
C
B
Day 1.notebook June 28, 2017
Natural
Whole
Integers
Rational
Irrational
Real
Day 1.notebook June 28, 2017
REAL NUMBER SYSTEM
Rational Numbers Irrational Numbers
Integers... ,3, 2, 1, 0, 1, 2, 3, ...
Whole Numbers
0, 1, 2, 3, 4, 5, ....
Natural Numbers
1, 2, 3, 4, 5, 6, ....
Prime Numbers
2, 3, 5, 7, 11, ...
Composite Numbers4, 6, 8, 9, 12, ...
Day 1.notebook June 28, 2017
Day 1.notebook June 28, 2017
Û
Day 1.notebook June 28, 2017
Day 1.notebook June 28, 2017
Day 1.notebook June 28, 2017
Û
∛80, 11 , √25 , ∛64 , √40
Place the following numbers in descending order. Show all your work.
Day 1.notebook June 28, 2017
HOMEWORK QUESTIONSPAGES 211-212
DO #'S: 3, 4, 10, 13-15