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February 28, 2015

February 28, 2015

Posted by **amanda** on Wednesday, June 25, 2008 at 5:25pm.

(1+cos(x) / 1-cos(x)) - (1-cos(x) / 1+cos(x)) = 4cot(x)csc(x)

?

help please!

- trig -
**bobpursley**, Wednesday, June 25, 2008 at 6:59pmget a common denominator on the left side and combine the two terms. Remember that 1-cos^2 x = sin^2 x

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