Wednesday

December 17, 2014

December 17, 2014

Posted by **Kk** on Thursday, October 28, 2010 at 3:22pm.

Sin ( sin-1. 9/41 - cos-1 (-5/13)

- Pre cal -
**Reiny**, Thursday, October 28, 2010 at 5:10pmlet sin-1. 9/41 = ß and cos-1 (-5/13 = Ø

so sin ß = 9/41 and cos ß = 40/41

and cosØ = -5/13 and sinØ = 12/13

then Sin ( sin-1. 9/41 - cos-1 (-5/13)

= sin(ß - Ø)

= sinßcosØ - cosßsinØ

= (9/41)(-5/13) - (40/41)(12/13) = -525/533

**Answer this Question**

**Related Questions**

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...

pre-cal - Simplify the given expression........? (2sin2x)(cos6x) sin 2x and cos ...

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 ...

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-calculas Math - how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+...

math - Eliminate the parameter (What does that mean?) and write a rectangular ...

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

Trig hep, please? Thank you! - 1. Find the exact value of sin(195(degrees)) 2. ...