Solved: In Exercises 1120, verify the identity. 11. sin t csc t = 1 12. sec y cos y = 1

Chapter 6, Problem 19

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Verifying a Trigonometric Identity In Exercises 11-20, verify the identity.

\((1+\sin x)(1-\sin x)=\cos ^{2} x\)

Text Transcription:

(1 + sin x)(1 - sin x) = cos^2 x

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