Posted by **Please Answer :)** on Wednesday, May 26, 2010 at 10:31pm.

A and B are positive acute angles. If sin A=(3/5) and cosB= (12/13) find the value of sin (A+B)

- Math -
**Ms. Sue**, Wednesday, May 26, 2010 at 10:32pm
See my last response.

- pleeaasee hellpp!! -
**Please Answer :)**, Wednesday, May 26, 2010 at 10:54pm
obviously its math so can you please just do the problem

- pleeaasee hellpp!! -
**Writeacher**, Wednesday, May 26, 2010 at 11:45pm
Please note that **we don't do students' homework** for them. Be sure to go back into your textbook or use a good search engine. http://hanlib.sou.edu/searchtools/

Once **YOU** have come up with attempted answers to **YOUR** questions, please re-post and let us know what you think. Then someone here will be happy to comment on your thinking.

- pleeaasee hellpp!! -
**D.Kapil**, Tuesday, July 10, 2012 at 4:48am
first you have to find the angles cosA and

SinB using pythogoras theorem. Then using the property expand Sin(A+B)and then substitute the given values. similarly do the same for cos(A+B) and find the quadrant in which A+B lies. Thats it!!!

## Answer This Question

## Related Questions

- math - find all solutions in the interval [0,2 pi) sin(x+(3.14/3) + sin(x- 3.14/...
- pleeaasee hellpp!! - if sin A= the square root of eleven over 7, find the value ...
- Math - If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find 1, Cos(A...
- Math - If A and B are acute angle such that SinA=8/17 and CosB=3/5.Find 1, Cos(A...
- pleeaasee hellpp!! - if sec x=the square root of 5/2 with angle x in quadrant IV...
- trig - A and B are positive acute angles. if sin A=4/5 and cos B=8/17 find the ...
- math - if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin ...
- math - if a and b are acute angles, sin(a+b)= 56/65, and sin b = 5/13, find sin ...
- trig - if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the ...
- Trigonometry - If cos(a)=1/2 and sin(b)=2/3, find sin(a+b), if 1) Both angles ...

More Related Questions