Use trigonometric identities to transform the left side of the equation into the right side (0 < θ < π/2). (1 + cos(θ))(1 − cos(θ)) =       = sin2(θ)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.6: Additional Trigonometric Graphs
Problem 60E
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Use trigonometric identities to transform the left side of the equation into the right side (0 < θ < π/2).

(1 + cos(θ))(1 − cos(θ))
=
 
 
  =
sin2(θ)
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