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September 17, 2014

September 17, 2014

Posted by **Adc** on Thursday, March 29, 2012 at 3:17pm.

cos x -cox x/1-tan x = sin x cos x/sin x -cos x

- calculus -
**Reiny**, Thursday, March 29, 2012 at 4:10pmLS = cosx = cosx/(1 - sinx/cosx))

= cosx - cosx/(cosx - sinx)/cosx) )

= cosx - cosx (cosx)/(cosx - sinx)

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

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

= sinxcosx/(sinx - cosx)

= RS

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