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January 30, 2015

January 30, 2015

Posted by **javier** on Tuesday, May 24, 2011 at 9:58pm.

- calculus -
**MathMate**, Tuesday, May 24, 2011 at 10:06pmsubstitute the identities

1/tan(x) = cot(x)

1/cot(x) = tan(x)

into the original equation and see what you get.

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