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Trigonometry 13 Online
OpenStudy (anonymous):

Which expression is equivalent to 1 + cot2x? a. (cos^2x)/(sin^2x) b. tan^2x c. sec^2x d. csc^2x PLEAASSSEEE I have no idea how to do this !

OpenStudy (itiaax):

D. To know the answer, you have to know the trigonometric identities and learn them by heart.

OpenStudy (anonymous):

D. c.= 1+tan^2x b.= sec^x-1

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