Posted by Kelly on Thursday, August 11, 2011 at 7:53pm.
integral of (1(sinx)^2))/(cosx)dx
i don't know what to make my "u" for usubstitution

single variable calculus  indefinite integrals  Damon, Thursday, August 11, 2011 at 8:10pm
ah
(1(sinx)^2)) = cos^2 x
Unless I am mistaken or there is a typo all you have is
cos x dx
which is sin x + c 
single variable calculus  indefinite integrals  Kelly, Thursday, August 11, 2011 at 9:13pm
Oh! I didn't realize it was so simple. Thank you!