Friday

September 19, 2014

September 19, 2014

Posted by **kim** on Sunday, April 19, 2009 at 8:50pm.

the steps i have so far are

1/(cos^2(x)-sin^2(x))

= 1/(1-1)/(sec^2(x)-csc^2(x))

but then i do not know what to do after this.

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