Video

Rotating points (Full video)

Khan Academy

Supporting grades: 8

Description: Finding the image of a point under a rotation. The example includes positive and negative angles of rotation. We're told that point P was rotated about the origin (0,0) by 60 degrees. So if originally point P is right over here and we're rotating by positive 60 degrees, so that means we go counter clockwise by 60 degrees. So this looks like about 60 degrees right over here.

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