Deriving trigonometric identities a. Differentiate both
Chapter 3, Problem 92(choose chapter or problem)
Deriving trigonometric identities a. Differentiate both sides of the identity cos 2t = cos2 t - sin2 t to prove that sin 2t = 2 sin t cos t. b. Verify that you obtain the same identity for sin 2t as in part (a) if you differentiate the identity cos 2t = 2 cos2 t - 1. c. Differentiate both sides of the identity sin 2t = 2 sin t cos t to prove that cos 2t = cos2 t - sin2 t.
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