Tuesday

September 30, 2014

September 30, 2014

Posted by **Mike** on Wednesday, May 26, 2010 at 9:40pm.

- trig -
**Reiny**, Wednesday, May 26, 2010 at 9:51pmrecall that

sinPcosQ - cosPsinQ = sin(P-Q)

LS = sin(A+B+C+)cos(B+C)-cos(A+B+C)sin(B+C)

= sin((A+B+C) -(B+C))

= sinA

= RS

**Answer this Question**

**Related Questions**

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

Math - Calculus - The identity below is significant because it relates 3 ...

math - find all solutions in the interval [0,2 pi) sin(x+(3.14/3) + sin(x- 3.14/...

tigonometry - expres the following as sums and differences of sines or cosines ...

Trig - Please help with this one. I've worked it out in so many ways and can't ...

algebra - Can someone please help me do this problem? That would be great! ...

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...

math - Prove that for all real values of a, b, t (theta): (a * cos t + b * sin t...