Prove problem involving sec cos sin

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MathRaven

Prove problem involving sec cos sin

Postby MathRaven » Sun Jul 08, 2012 8:00 pm

Hi guys been struggling to solve this
If you know how to do it, please do solve and show work so that I can follow your steps

prove (sec(x)-cos(x))/(sec(x)+cos(x))=(sin^2(x))/(1+cos^2(x))

theshadow
Posts: 97
Joined: Sun Feb 22, 2009 11:12 pm

Re: Prove problem involving sec cos sin

Postby theshadow » Tue Jul 10, 2012 1:35 am

MathRaven wrote:prove (sec(x)-cos(x))/(sec(x)+cos(x))=(sin^2(x))/(1+cos^2(x))

i'd start w/ the LHS, turn the sec's into 1/cos's, and change to common denom's. what do you get when you do that?


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