Trigonometric Proof Help
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Trigonometric Proof Help

[From: ] [author: ] [Date: 11-12-11] [Hit: ]
......
How do I prove that (cosx -1) / cotx = sinx-tanx?

I always end with tanx (cosx-1)!
Am I not going far enough?

-
(cosx -1) / cotx = sinx-tanx

cosx/cotx -1/ cotx = sinx-tanx

cosx / cosx/sinx - 1 / cosx/sinx =

sin x - sinx/cosx =

sinx - tanx =
1
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