Been trying to do this proof for a while and I can't seem to solve it:

Solve by using pythagorean identities:

sinx/1-cosx + sinx/1+cosx = 2cscx

Help much appreciated.

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- Dec 1st 2012, 10:50 AMkyle0671Need help with a proof
Been trying to do this proof for a while and I can't seem to solve it:

Solve by using pythagorean identities:

sinx/1-cosx + sinx/1+cosx = 2cscx

Help much appreciated. - Dec 1st 2012, 10:57 AMScopurRe: Need help with a proof
Ill get you started

LHS:

$\displaystyle \sin(x) \left ( \frac{1}{1-\cos(x)} + \frac{1}{1+\cos(x)} \right) $

$\displaystyle \sin(x) \left [ \frac{1+\cos(x) + 1 -\cos(x)}{(1-\cos(x))(1+\cos(x))} \right] $

Don't forget the most important trig identity

$\displaystyle \sin(x)^2 + \cos(x)^2 = 1 $ - Dec 1st 2012, 01:30 PMkyle0671Re: Need help with a proof
Thanks for the help. Got it solved