Prove each of the following identities. cos 2 theta = 1+ cos 2 theta /2
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter5: Identities And Formulas
Section5.3: Double-angle Formulas
Problem 47PS: Prove each of the following identities. cot=sin21cos2
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Question
Prove each of the following identities.
cos 2 theta = 1+ cos 2 theta /2
Expert Solution
Step 1
To prove the identity,
Consider the right side of the identity and show that is equal to the left side.
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