CLASS 1 CHARACTERISTICS of FUNCTIONS, ALGEBRAICALLY
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Transcript CLASS 1 CHARACTERISTICS of FUNCTIONS, ALGEBRAICALLY
Chapter 6 – Trigonometric Functions:
Right Triangle Approach
6.4 - Inverse Trigonometric Functions and Right
Triangles
Remember…
The inverse sine function is the function sin-1 with
domain [-1, 1] and range [- ⁄ 2, ⁄ 2] defined by
1
sin x y sin y x
6.4 - Inverse Trigonometric Functions and Right
Triangles
Remember…
The inverse cosine function is the function cos-1
with domain [-1, 1] and range [0, ] defined by
1
cos x y cos y x
6.4 - Inverse Trigonometric Functions and Right
Triangles
Remember…
The inverse tangent function is the function tan-1
with domain (-∞, ∞) and range (- ⁄ 2, ⁄ 2) defined
by
1
tan x y tan y x
6.4 - Inverse Trigonometric Functions and Right
Triangles
Remember…
6.4 - Inverse Trigonometric Functions and Right
Triangles
Examples – pg. 467
Find the exact value of each expression, if it is
defined.
1
5. (a) sin
2
1
(b) cos
2
3
(c) tan
3
6. (a) sin 1 1
(b) cos 1 1
(c) tan 1 0
1
1
6.4 - Inverse Trigonometric Functions and Right
Triangles
1
Examples – pg. 467
Use a calculator to find an approximate value of each
expression rounded to five decimal places, if it is
defined.
8. cos 1 0.75
1
10. sin
3
1
12. tan 1 4
6.4 - Inverse Trigonometric Functions and Right
Triangles
Examples – pg. 467
Find the angle
in degrees, rounded to one decimal.
6.4 - Inverse Trigonometric Functions and Right
Triangles
Examples – pg. 467
Find all the angles between 0
satisfying the given equation.
3
22. sin
2
and 180
1
26. cos
9
6.4 - Inverse Trigonometric Functions and Right
Triangles
Evaluating Compositions
5.5 - Inverse Trigonometric Functions & Their
Graphs
Examples – pg. 468
Find the exact value of the expression.
1 4
28. tan sin
5
1 12
29. sec sin
13
1 7
30. csc cos
25
1 12
31. tan sin
13
1 2
32. cot sin
3
6.4 - Inverse Trigonometric Functions and Right
Triangles
Evaluating Compositions
Evaluate the following:
2
1. tan arccos
3
1 5
3. cos tan
12
7
2. sin cos
4
1 1
4. cot sin
3
1
6.4 - Inverse Trigonometric Functions and Right
Triangles
Examples – pg. 468
Rewrite the expression as an algebraic expression in
x.
34. sin tan 1 x
36. cos tan 1 x
35. tan sin 1 x
6.4 - Inverse Trigonometric Functions and Right
Triangles
Calculus Problems Made Easy
Write the following as an algebraic expression in x.
a. sin cos
1
b. cot cos
1
3x
1
0 x
3
3x
1
0 x
3
6.4 - Inverse Trigonometric Functions and Right
Triangles
Example – pg. 468
6.4 - Inverse Trigonometric Functions and Right
Triangles