studyhard101
Which of the following is an identity?
sin2x  cos2x = 1
csc2x + cot2x = 1
(cscx + cotx)2 = 1
sin2x sec2x + 1 = cot2x csc2x



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studyhard101
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the 2 is squared

kausarsalley
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do you mean all the 2 represent square??

studyhard101
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yes

studyhard101
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I think (cscx + cotx)^2 =1 is the answer but I am not sure

kausarsalley
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oh okay.......i am also solving it to see what i would get..

studyhard101
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It is okay if you don't know the answer