8. Prove: coscos x-sinsin x coscos x + sinsin x- sec sec 2x - tan 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°.
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Transcribed Image Text:8. Prove:
coscos x-sinsin x
coscos x + sinsin x-
= sec sec 2x - tan tan 2x
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