Question

tan^2-cot^2=sec^2(1-cot^2)

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Answer 1

Step-by-step explanation:

tan^2-cot^2=sec^2-sec^2cot^2

tan^2-cot^2=sec^2-cosec^2

tan^2-sec^2=cot^2-cosec^2

-1 = -1

hope it helps you