Posted by **Jon** on Wednesday, April 22, 2009 at 6:46pm.

Find the coordinates of the point whose polar coordinates are (20,140degrees).

r=20

0=140

x=r cos (o)

y=r sin (o)

x=20 cos (140)

y=20 sin (140)

x=20 (-0.7660)= -15.32

y=20 (0.6427)= 12.85

(-15.32, 12.86)

on my answer on my paper, I left off the - and the ) at the end. She pointed at the ( at the beginning but she didn't add the negative sign for 15.32 so I'm confused on whether I got it wrong just because I left off the parenthesis at the end or the answer isn't (-15.32, 12.86)

## Answer This Question

## Related Questions

- Math - Find the coordinates of the point whose polar coordinates are (20,...
- Math(is the problem too hard?) - Find the coordinates of the point whose polar ...
- TRIGONOMETRY - Can you check my work, please? This is for a trig study guide for...
- Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
- 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 - A point in polar coordinates is given, Find the corresponding rectangular...
- algebra - Can someone please help me do this problem? That would be great! ...
- Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...
- trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

More Related Questions