interactive notebook table of contents pg. 23 7-4: trigonometry pg. 24: 7-4 practice
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Interactive Notebook Table of Contents pg. 23 7-4: Trigonometry pg. 24: 7-4 Practice. Lesson 7-4. Right Triangle Trigonometry. If the Angle of Perspective is. then. then. Hyp. Adj. Hyp. Opp. Opp. Adj. Trigonometry Ratios. If is the Angle of Perspective then …... - PowerPoint PPT PresentationTRANSCRIPT
Lesson 7-4 Right Triangle Trigonometry
2
Lesson 7-4
Right Triangle
Trigonometry
Lesson 7-4 Right Triangle Trigonometry
3
Lesson 7-4 Right Triangle Trigonometry
4
If the Angle of Perspective is
CA then
AC Hyp
BC Opp
AB Adj
A
B COpp
HypAdj
thenA
B C
Opp
Adj
Hyp
AC Hyp
AB Opp
BC Adj
Lesson 7-4 Right Triangle Trigonometry
5
Trigonometry Ratios
If is the Angle of Perspective then …...
Sin =
Cos =
tan =
C
A
B C
Angle of Perspective
COpp
Hyp
C Adj
Hyp
C Opp
Adj
OppHyp
Adj
Lesson 7-4 Right Triangle Trigonometry
6
Solving Trigonometric Equations
There are only three possibilities for the placement of the variable ‘x”.
XSin = Opp
Hyp Sin = x
HypSin = Opp
x
x12 cm
25
A
B C
x12 cm
25
A
B C
25 cm
x
12 cm
A
B C
Sin = X12
25
Sin = 0.48X
X = Sin (0.48)1
X = 28.6854
Sin 25 =
12
x
1x = (12) (0.4226)
x = 5.04 cm
0.4226 = 12
x
Sin 25 = 12
x
0.4226 = 12
x1
x = 12
0.4226
x = 28.4 cm
Lesson 7-4 Right Triangle Trigonometry
7
*Tear out page 83 in your Geometry Workbook.
*Complete front and back of the page.*Staple it to page 24 in your Interactive Notebook.