SOLUTION: The point (0,-1) on the unit circle is rotated 315 degrees counter-clockwise.Determine the coordinates of the new point.

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Question 142054: The point (0,-1) on the unit circle is rotated 315 degrees counter-clockwise.Determine the coordinates of the new point.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The point (0,-1) on the unit circle is rotated 315 degrees counter-clockwise.Determine the coordinates of the new point.
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(0,-1) is at 270 degrees
Rotating 315 counter-clockwise adds 315 = 225 degrees
where the coordinates are:
x = cos225 = -1/sqrt2
y = sin225 = -1/sqrt2
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Cheers,
Stan H.