Tuesday

October 21, 2014

October 21, 2014

Posted by **sonia** on Tuesday, April 19, 2011 at 6:13pm.

sin pi=cos(pi + 40)

sin(80 - pi)=cos pi

- math -
**PsyDAG**, Wednesday, April 20, 2011 at 12:15pmπ (pi) by definition = 3.1416....

**Answer this Question**

**Related Questions**

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

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...

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

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

Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...

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

math - Can you please check my work. A particle is moving with the given data. ...

trig - The expression 4 sin x cos x is equivalent to which of the following? (...