For this problem we're supposed to prove/verify that:

√((1-cosx)/(1+cosx)) = (1-cosx)/|sinx|

Also, if someone could explain why the sinx in the right side has to be absolute value, that would be appreciated. Thank you :)

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- Dec 10th 2008, 05:47 PMSMA777Verify that √((1-cosx)/(1+cosx)) = (1-cosx)/|sinx|
For this problem we're supposed to prove/verify that:

√((1-cosx)/(1+cosx)) = (1-cosx)/|sinx|

Also, if someone could explain why the sinx in the right side has to be absolute value, that would be appreciated. Thank you :) - Dec 10th 2008, 06:11 PMskeeter

basic algebra ... - Dec 10th 2008, 07:06 PMSMA777
Thank you, I understand the proof now!

A little clarification in this matter:

|a| = √a^2

is this because its a^2 and not (-a)^2? (So if it were (-a)^2 it'd be -|a| ?)

Thanks! - Dec 10th 2008, 09:39 PMProve It