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April 18, 2015

April 18, 2015

Posted by **Josh** on Thursday, April 19, 2012 at 8:26pm.

i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t

then do i go =(sin^2t+cos^2t)/sin^2tcos^2t

stumped

- Trig -
**Reiny**, Thursday, April 19, 2012 at 9:58pmLS = (sin^2 t + cos^2 t)(sin^2 t - cos^2 t)/(sin^2 t cos^2 t)

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

= sin^2 t/(sin^2 t cos^2 t) - cos^2 t/(sin^2 t cos^2 t)

= 1/cos^2 t - 1/sin^2 t

= sec^2 t - csc^2 t

= RS

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