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OpenStudy (anonymous):
Please help me with this question. Find the rectangular coordinates of (9,150°)
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OpenStudy (kc_kennylau):
\[x=r\cos\theta\]\[y=r\sin\theta\]
OpenStudy (anonymous):
Soo x=9*sqrt3/2, y=9/2?
OpenStudy (kc_kennylau):
Negative signs!!!
OpenStudy (anonymous):
Oh the first one is negative! Im sorry, Im bad with signs
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