1. Lesson 14.4 - Inverse Trig Functions A DO NOW: If B is right angle, find the measure of angle C and angle A. 2425 B C 7

2. 14.4 Inverse Trig Functions 1. Solve for if a. Arcsin b. arcsin INFINITE Number of solutions! Only ONE solution

3. Why only ONE solution? Arcsin is a FUNCTION 2. Arcsin A function must have only ONE output for EACH INPUT!! Domain - possible “input” (x) values for a function Range – possible “output” (y) values for a function

4. Ranges (Outputs) of Inverse Functions 3. Find Arctan (1)=4. Find Arcsin (.88) = 5. Find Arctan(tan(-45°))6. Find Arccos(cos(-45°))

5. In a full circle there are 360 degrees. Each degree is split up into 60 parts, each part being 1/60 of a degree. These parts are called minutes. Each minute is split up into 60 parts, each part being 1/60 of a minute. These parts are called seconds. Degree, Minutes, and Seconds 13 15 A