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December 20, 2014

December 20, 2014

Posted by **Katie** on Saturday, March 3, 2012 at 6:09pm.

Please help asap!!!!! PLEASE

- Trig -
**Damon**, Saturday, March 3, 2012 at 6:34pmI think you mean

sin x/(cos x + 1) + (cos x-1)/sin x = 0

multiply both sides by sin x (cos x+1)

sin^2x + (cos x-1)(cos x+1)= 0

sin^2 x + cos^2 x - 1 = 0

but we know sin^2 x+cos^2 x = 1

1 - 1 = 0

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