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April 18, 2014

April 18, 2014

Posted by **carolyn** on Tuesday, July 10, 2012 at 5:24pm.

- trig -
**Steve**, Tuesday, July 10, 2012 at 5:35pmsin t /(1-cos t) - (1+cos t)/sin t

sin t (1+cos t)/((1-cos t)(1+cos t)) - (1+cos t)/sin t

sin t (1+cos t)/(1-cos^2 t) - (1+cos t)/sin t

sin t (1+cos t)/sin^2 t - sin t (1+cos t)/sin^2 t

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