6. Prove each of the following identities. a. sin (0-)=-cose cos(A+ B) b. cot A- tan B = %3D sin A cos B c. cos(A+B)+cos(A– B)=2cos A cos B

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
Section5.1: Proving Identities
Problem 47PS: Prove that each of the following identities is true. sint1+cost=1costsint
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6. Prove each of the following identities.
a. sin (0-4) =-cos0
cos (A+ B)
b. cot A- tan B =
sin A cos B
cos(A+ B)+cos(A– B) = 2 cos A cos B
с.
Transcribed Image Text:6. Prove each of the following identities. a. sin (0-4) =-cos0 cos (A+ B) b. cot A- tan B = sin A cos B cos(A+ B)+cos(A– B) = 2 cos A cos B с.
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