Questions on Geometry: Geometric formulas answered by real tutors!

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Question 141787: A circle centered at the point of origin has a radius of 10. If the point (10,0) is rotated 120 degrees counter-clockwise, determine the coordinates of the new point in exact radical form.: A circle centered at the point of origin has a radius of 10. If the point (10,0) is rotated 120 degrees counter-clockwise, determine the coordinates of the new point in exact radical form.
Answer by Alan3354(1912) About Me  (Show Source):
You can put this solution on YOUR website!
A circle centered at the point of origin has a radius of 10. If the point (10,0) is rotated 120 degrees counter-clockwise, determine the coordinates of the new point in exact radical form.
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x = 10*cos(120)
y = 10*sin(120)
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x = 10* (-1/2)
y = 10* sqrt(3)/2
so the point is:
-5,5*sqrt(3)