Mathematics
Mathematics, 30.01.2021 01:10, rayanne7099

Use trig identities to verify this expression:
((1-tan^2(x))/(sec^2(x))=cos(2x).

answer
Answers: 1

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Do you know the correct answer?
Use trig identities to verify this expression:
((1-tan^2(x))/(sec^2(x))=cos(2x)....

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