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Prove the identity. Work on one side only. cos(4x) = 18 sin² x+8 sin ¹ x

Prove the identity. Work on one side only. cos(4x) = 18 sin² x+8 sin ¹ x

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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Prove the identity. Work on one side only. cos(4x) = 18 sin² x + 8 sin¹ x
Transcribed Image Text:Prove the identity. Work on one side only. cos(4x) = 18 sin² x + 8 sin¹ x
Let f(x) = sinx. Show that f(x+h)-f(x) h (sinh) COS x = sin x (1-cos h).
Transcribed Image Text:Let f(x) = sinx. Show that f(x+h)-f(x) h (sinh) COS x = sin x (1-cos h).
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