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4 years ago

8

which of the following is an identity tan^2x+cos^2x=1, sin^2x cot^2x + cos^2 tan^2x = 1, sinx - cosx +1 = tanx, (1-2sin^2x)csc^x

= 4cos^x-2

1 answer:

lana66690 [7]4 years ago

7 0

The first one isnt because sin^2 x + cos^2 x = 1

the second one is an identity because it simplifies to sin^2 x + cos^2 x = 1

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