This document provides instructions and examples for a geometry drill on inverse functions. Students are asked to find missing values in functions, find the inverse of given functions, use inverse sine and cosine to find angle measurements given side lengths, and provide answers to assignment questions. The document also provides example answers to practice problems involving inverse trigonometric functions and finding unknown angle measures.

1. GT Geom Drill 3/28/14
• Have CW and HW on the corner of your desk
with a pen.
• Find the missing values

2. GT Geom Drill 3/28/14
• Have CW and HW on the corner of your desk
with a pen. You will need a responder
• Find the missing values
5)( xxf 5)( xxg
x f(x)
1
3
5
-2
x g(x)
1
3
5
-2

3. Drill Cont.
• Find the inverse of the following
42)( xxf

4. Objective
• STW use knowledge of inverse fucntiosn to
find the angle measurements using sine,
cosine, and tangent

5. Book Answers
43. 6.10 m 44. 45o
45. sine, cosine 46. 30o
47. 60o 48. 9.7 ft
49. 1.2 ft 50. 14.3 in

6. Assignment
Answers

7. How can I find the measure of angle A
14.4 m
27 m
30.6m
A
B C

8. Inverse sine and cosine:
• If sin =opp/hyp and cos =adj/hyp, then the inverse sin and cos,
abbreviated sin-1 and cos-1 (also referred to as arcsin and arccos)
is used to find the angle, when given the sides