Posted by **Ada Enugu** on Tuesday, January 29, 2013 at 1:04am.

If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find

1, Cos(A+B)

2, Sin(A+B)

3, Sin(A-B)

## Answer this Question

## Related Questions

- math - find all solutions in the interval [0,2 pi) sin(x+(3.14/3) + sin(x- 3.14/...
- Math - If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find 1, Cos(A...
- TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
- Trig - Please help with this one. I've worked it out in so many ways and can't ...
- Math - In any angle ABC prove tht the perimeter = a/Sin A(Sin A + Sin B + Sin C...
- tigonometry - expres the following as sums and differences of sines or cosines ...
- trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...
- Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
- algebra - Can someone please help me do this problem? That would be great! ...
- Pre-Calculus - How can the following two identities be verified? 1. (cos^2y)/(1-...