find an expression that completes the identity,

cos^2x/1-sinx = ?

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- Apr 27th 2009, 03:21 PMjumpman23Identity
find an expression that completes the identity,

cos^2x/1-sinx = ? - Apr 27th 2009, 04:07 PMskeeter
- Apr 27th 2009, 04:27 PMjumpman23
I'm still confused about what to do. How do you use this pythagorean identity with this?

- Apr 27th 2009, 04:30 PMskeeter
- Apr 27th 2009, 04:33 PMjumpman23
does it end up equaling 1?

- Apr 27th 2009, 04:42 PMskeeter
$\displaystyle \frac{\cos^2{x}}{1 - \sin{x}} = \frac{1 - \sin^2{x}}{1 - \sin{x}} = \frac{(1 - \sin{x})(1 + \sin{x})}{1 - \sin{x}} = 1 + \sin{x}

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