L10Q18. Simplify: sin2 x – cos2 x A.2 cos2 x - 1 B.2 sin 2 x - 1
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 2E
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L10Q18.
Simplify: sin2 x – cos2 x
A.2 cos2 x - 1
B.2 sin 2 x - 1
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