sinx/(1+cosx)

simplify that so it equals:

tan(x/2)

(1-cosx)/sinx

simplify that so it equals:

tan(x/2)

so can someone post the steps please and thanks

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- December 12th 2011, 06:15 PMahmedbtrig proof help
sinx/(1+cosx)

simplify that so it equals:

tan(x/2)

(1-cosx)/sinx

simplify that so it equals:

tan(x/2)

so can someone post the steps please and thanks - December 12th 2011, 06:26 PMskeeterRe: trig proof help
- December 12th 2011, 09:06 PMSironRe: trig proof help
You can also use the t-formulas.

Let then

- December 13th 2011, 05:37 AMahmedbRe: trig proof help
no i am not talking about this.

i am talking about,

sin(x)/(1+cos(x))

when you simplify that you get tan(x/2)

so how do you get tan(x/2) from the other equation? - December 13th 2011, 05:42 AMe^(i*pi)Re: trig proof help
- December 13th 2011, 05:50 AMahmedbRe: trig proof help
i still don't kind of get it

can you show the steps? - December 13th 2011, 07:32 AMahmedbRe: trig proof help
I still need help

- December 13th 2011, 07:45 AMPlatoRe: trig proof help
- December 13th 2011, 07:59 AMahmedbRe: trig proof help
so what do you do with the (+1)?

- December 13th 2011, 08:03 AMQuackyRe: trig proof help
Have you tried the suggested substitution in post #8? If you have, you'll soon see what happens to the +1.