Math
posted by Jon .
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)
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