Verify the identity. (Simplify at each step.) 3 sin? a – 3 sint a = 3 cos? a - 3 cos“ a 3 sin? a – 3 sin a = 3 sin? a(1 - - (3 -| )(cos² a) = 3 cos? a - 3 cos4 a

Algebra & Trigonometry with Analytic Geometry
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ISBN:9781133382119
Author:Swokowski
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Chapter7: Analytic Trigonometry
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Verify the identity. (Simplify at each step.)

Verify the identity. (Simplify at each step.)
3 sin? a
3 sin" α =
3 cos? a - 3 cos4 a
3 sin? α-3 sinf α3
sin? a(1
3 sin? a - 3 sin4 a =
- (3-
(cos2
= 3 cos? a - 3 cos4 a
Transcribed Image Text:Verify the identity. (Simplify at each step.) 3 sin? a 3 sin" α = 3 cos? a - 3 cos4 a 3 sin? α-3 sinf α3 sin? a(1 3 sin? a - 3 sin4 a = - (3- (cos2 = 3 cos? a - 3 cos4 a
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