Monday
December 22, 2014

Homework Help: pre-calculus

Posted by Kimmie on Thursday, January 28, 2010 at 10:14pm.

If sin a = 3/5 when Pi/2<a<Pi and
cos B = -12/13 when Pi<B<3Pi/2, then what is the value of sin(a+b)?

I don't get the question... Help appreciated.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...
TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
tigonometry - expres the following as sums and differences of sines or cosines ...
Math - Calculus - The identity below is significant because it relates 3 ...
Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
algebra - Can someone please help me do this problem? That would be great! ...
Math - Test for symmetry with repsect to Q=pi/2, the polar axis, and the pole. ...
Math - Test for symmetry with repsect to Q=pi/2, the polar axis, and the pole. r...
trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...
Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...

Search
Members