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Verify that the equation given below is an identity. (Hint: cos 2x = cos (x + X).) ços2x = 1-2 sin 2x Rewrite the expression on the left to put it in a more useful form cos2x = 1- sin 2x Expand the Argument. cos2x = cos 2x - sin 2x Simplify both of the terms found in the previous expression. cos2x = 1 2 sin 2x cos2x = cos2x = 1-2 sin 2x

Verify that the equation given below is an identity. (Hint: cos 2x = cos (x + X).) ços2x = 1-2 sin 2x Rewrite the expression on the left to put it in a more useful form cos2x = 1- sin 2x Expand the Argument. cos2x = cos 2x - sin 2x Simplify both of the terms found in the previous expression. cos2x = 1 2 sin 2x cos2x = cos2x = 1-2 sin 2x

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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MyLab 个→ X u|① 四 Verify that the equation given below is an identity. (Hint: cos 2x = cos (x + x).) ços2x = 1-2 sin 2x Rewrite the expression on the left to put it in a more useful form cos2x = 1- sin 2x Expand the Argument. cos2x = %3D cos 2x - sin 2x cos2x = 1- 2 sin 2x Simplify both of the terms found in the previous expression. cos2x = cps2x = 1-2 sin 2x %3D hp
Transcribed Image Text:MyLab 个→ X u|① 四 Verify that the equation given below is an identity. (Hint: cos 2x = cos (x + x).) ços2x = 1-2 sin 2x Rewrite the expression on the left to put it in a more useful form cos2x = 1- sin 2x Expand the Argument. cos2x = %3D cos 2x - sin 2x cos2x = 1- 2 sin 2x Simplify both of the terms found in the previous expression. cos2x = cps2x = 1-2 sin 2x %3D hp
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