# verifying trigonometric identities solver?

Asked Oct 19, 2011, 07:38 PM — 3 Answers
Verify that (1-(cosx- sinx)^2)/cosx=2sinx

 ebaines Posts: 10,055, Reputation: 5539 Expert #2 Oct 20, 2011, 05:53 AM
If you multiply out the (cosx - sinx)^2 part, you can then apply the identity cos^2x+sin^2x=1. It falls right out from there.
 alpha2618bit Posts: 1, Reputation: 1 New Member #3 May 1, 2012, 07:09 PM
sin^2*(1+cot^2)=1
 ebaines Posts: 10,055, Reputation: 5539 Expert #4 May 2, 2012, 05:40 AM
Convert the cotangent function to cos/sin - it's straight forward from there.

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