SOLUTION: 1)tan^2(x)(sin^2(x)−1)=−sin^2(x) 2) cos^2(x) = sin^2 (x) (1-csc^(x)) 3) sinx( sec^2(x) -1) = tan^2 (x) / sec (x) how can I verify these?

SOLUTION: 1)tan^2(x)(sin^2(x)−1)=−sin^2(x) 2) cos^2(x) = sin^2 (x) (1-csc^(x)) 3) sinx( sec^2(x) -1) = tan^2 (x) / sec (x) how can I verify these?

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Question 1026524: 1)tan^2(x)(sin^2(x)−1)=−sin^2(x)

2) cos^2(x) = sin^2 (x) (1-csc^(x))
3) sinx( sec^2(x) -1) = tan^2 (x) / sec (x)
how can I verify these?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

so

and

so

That should give you enough information to solve the first one.

John

My calculator said it, I believe it, that settles it

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