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48. -1 12 cos 2 tan-1 210

48. -1 12 cos 2 tan-1 210

Trigonometry (11th Edition)
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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12 48- co- (2tan 11) 5
Transcribed Image Text:12 48- co- (2tan 11) 5
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Topic - trigonometric identities

We are given:

cos2tan-1125Formulas requiredcos(2θ)=1-tan2θ1+tan2θ

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