1. Use basic identities to simplify the expression csc x sinx + sinx cscx
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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1. Use basic identities to simplify the expression csc x sin x + sin x
CSC X
2. Verify the identity
secx cos x = sin x tan x
3. Find the exact value of sin(-
13π.
12
4. Find the exact value of sin(80°) cos(35°) — cos(80°) sin(35°)
5. Prove the identity 1 + cos 2x + 2 sin²x = 2
using the sum and difference formulas.
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