4sin'x – 1 1. 2sinx + 1 = 2sinx – 1 sin'x – 2sinx + 1 2. = sinx – 1 sinx – 1 3. ( sinx - cos x)(sinx + cos x) = 1 - 2 cos?x 4. (tanx)(1 - cot x) = tan x - 1 1 1 5. sin x cosx – sinx CosY sin xcosx

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°.
Question

Verify each trigonometric identity.

4sin'x – 1
2sinx – 1
1.
2sinx +1
sinx – 2sinx + 1
2.
= sinx – 1
sinx – 1
3. ( sinx - cos x)(sinx + cos x) = 1 - 2 cos>x
4. (tanx)(1 - cot x ) = tan x - 1
1
5.
sin x
1
cosx – sinx
CoSY
sin xcosx
Transcribed Image Text:4sin'x – 1 2sinx – 1 1. 2sinx +1 sinx – 2sinx + 1 2. = sinx – 1 sinx – 1 3. ( sinx - cos x)(sinx + cos x) = 1 - 2 cos>x 4. (tanx)(1 - cot x ) = tan x - 1 1 5. sin x 1 cosx – sinx CoSY sin xcosx
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