trig
posted by Aqib .
1cos/1+cos= 2(coseccot)

trig 
Steve
I presume you want to solve this equation for something. It would be easier if you actually wrote it with variables, coefficients, all that cool stuff.
Or is it just an identity you want to prove? If you want help, don't just toss trash over the transom. 
trig 
Steve
Ahh. an identity
(1cos)/(1+cos) * (1cos)/(1cos)
= (1cos)^2/(1cos^2)
= (1  2cos + cos^2)/sin^2
= (1  2cos + 1  sin^2)/sin^2
= ***
Hmmm. mistake?
Take x=π/4. Things don't match.
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