1. cos (2x) 2sin(x) cos(x) tan(x) = cot (x) tan (2x)
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°.
Related questions
Question
Verify (prove) the following two (#1 and #2) trigonometry identities:
1. (see attached image).
2. (see attached image).

Transcribed Image Text:1.
cos (2x
2sin(x) cos(x) tan(x)
=
cot (x)
tan (2x)

Transcribed Image Text:2sin(x). cos(x) = cot(x) . (1 + cos(2x))
=
tan² (x)
2,
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