To evaluate | sin42x cos 2xdx conveniently, the formula/identity to be used islare A sin²2x=1– cos²2x only 1+ cos4x and 2 sin4x В 2 cos²2x=1– sin²2x only D) None 1- cos4x and 2 sin4x 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.1: Verifying Trigonometric Identities
Problem 20E
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To evaluate |
sin42x cos 2xdx conveniently, the formula/identity to be used islare
A
sin²2x=1– cos²2x only
1+ cos4x
and
2
sin4x
B
В
2
cos²2x=1– sin²2x only
D) None
1- cos4x
and
2
sin4x
(E)
2
Transcribed Image Text:To evaluate | sin42x cos 2xdx conveniently, the formula/identity to be used islare A sin²2x=1– cos²2x only 1+ cos4x and 2 sin4x B В 2 cos²2x=1– sin²2x only D) None 1- cos4x and 2 sin4x (E) 2
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