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Not sure how to answer :( I read something about a unit circle but I'm not sure how to identify what type of circle it is.

 Apr 7, 2020
 #1
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3150   is similar to 45o    cos is the same     but  sin is neg

coordinates  (x,y)   =   ( sqrt2/2  ,  -sqrt2/2 )

 Apr 7, 2020

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