Prove the following identity. (sin x – cos x)2 = 1 - sin 2x We begin by expanding the left side of the equation, and then regroup. We can then use a to simplify. (sin x – cos x)2 = sin? x – 2 sin x cos x + sin? x + - 2 sin x cos x - 2 sin x cos x = 1 - sin 2x II
Prove the following identity. (sin x – cos x)2 = 1 - sin 2x We begin by expanding the left side of the equation, and then regroup. We can then use a to simplify. (sin x – cos x)2 = sin? x – 2 sin x cos x + sin? x + - 2 sin x cos x - 2 sin x cos x = 1 - sin 2x II
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 60E
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