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April 18, 2014

April 18, 2014

Posted by **Lynn** on Thursday, July 19, 2012 at 12:45pm.

1-cosx/sinx=sinx/1+cosx

- Trig -
**Reiny**, Thursday, July 19, 2012 at 2:15pmYou must mean

(1-cosx)/sinx = sinx/(1+cosx)

LS = (1-cosx)/sinx * (1+cosx)/(1+cosx)

= 1 - cos^2 x)/(sinx(1+cosx) )

= sin^2 x/(sinx(1+cosx) )

= sinx/(1+cosx)

= RS

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