Posted by Kels. on Thursday, March 8, 2012 at 12:50am.
I'm having trouble solving this proof. Can you help?
cos^3+sin^3/cosx+sinx = 1sinxcosx
Thanks!:)

Trig Proofs!  Steve, Thursday, March 8, 2012 at 12:20pm
recall that a^3 + b^3 = (a+b)(a^2  ab + b^2)
cos^3 + sin^3 = (cos+sin)(cos^2  sin*cos + sin^2)
look easier now?