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October 21, 2014

October 21, 2014

Posted by **Anonymous** on Monday, December 6, 2010 at 10:18am.

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

- Precalculus Help -
**Reiny**, Monday, December 6, 2010 at 10:35amI think you meant

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

LS = (sinx(1+sinx) + sinxcosx)/(cosx(1+sinx))

= (sinx + sin^2x + cos^2x)/(cosx(1+sinx))

= (sinx + 1)/(cosx(1+sinx))

= 1/cosx

= sec x

= RS

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