In Problems 5172, establish each identity. cos (2u)- sin (2u) = cos(4u)
Question:
In Problems 51–72, establish each identity.
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To establish the identity cos22u sin22u cos4u well use some trigonometric identities and algebraic m...View the full answer
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Related Book For 
Precalculus Concepts Through Functions A Unit Circle Approach To Trigonometry
ISBN: 9780137945139
5th Edition
Authors: Michael Sullivan
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