Question

The point P(-5, -10) is rotated 90° counterclockwise about the origin. What are the coordinates of P'? *

Answer 1

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Answer 2

P'(10, - 5 )

Explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

P(- 5, - 10 ) → P'(10, - 5 )