Use your graphing calculator to determine if each equation appears to be an identity bygraphing the left expression and right expression together. If so, prove the identity. If not,find a counterexample.   cos x  = sin (pi/2 - x)

Trigonometry (MindTap Course List)
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ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
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Chapter5: Identities And Formulas
Section5.1: Proving Identities
Problem 79PS
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Use your graphing calculator to determine if each equation appears to be an identity by
graphing the left expression and right expression together. If so, prove the identity. If not,
find a counterexample.

 

cos x  = sin (pi/2 - x)

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