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 = 1-sinxcosx

Thanks!:)

## Answer this Question

## Related Questions

- Trigonometry. - ( tanx/1-cotx )+ (cotx/1-tanx)= (1+secxcscx) Good one! ...
- Precalculus/Trig - I can't seem to prove these trig identities and would really ...
- Precalculus/Trig - Prove the following identity: 1/tanx + tanx = 1/sinxcosx I ...
- Trigonometry - Prove the following trigonometric identities. please give a ...
- equations trig - 1) ctgx+cosx=1+ctgx*cosx 2) sin^4x+cos^4x=1/2 3) (sinx-cosx)^2=...
- Trig........ - I need to prove that the following is true. Thanks (cosx / 1-sinx...
- Trig....... - I need to prove that the following is true. Thanks (2tanx /1-tan^x...
- Trig - prove the identity (sinX)^6 +(cosX)^6= 1 - 3(sinX)^2 (cosX)^2 sinX^6= ...
- trig - I need to prove equality. a) (sina + cosa)^2 -1 / ctga - sinacosa = 2tg^...
- trig - express this in sinx (1/ cscx + cotx )+ (1/cscx- cotx) i got 2sinx is ...