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Mathematics 20 Online
OpenStudy (anonymous):

Prove that

OpenStudy (anonymous):

OpenStudy (anonymous):

Someone please tell me how to do this :|

OpenStudy (anonymous):

with the steps

OpenStudy (anonymous):

sin^2 x + cos^2 x = 1 so the equation becomes : 1+ tan^2 x = sec^2 x = 1/cos^2 x

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