okkk66
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Help please

What will be the new position of the given point (1,-9) after rotating
90° counterclockwise about the origin?

Respuesta :

junoXX

Answer:

(- 1, - 9 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , so

(- 9, 1 ) → (- 1, - 9 )
-1,-9 is the answer good luck

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