joshuamalachi joshuamalachi

14-07-2021
Mathematics

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What are the coordinates of A’ after a 90° counterclockwise rotation about the origin.

What are the coordinates of A after a 90 counterclockwise rotation about the origin class=

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jimrgrant1 jimrgrant1

14-07-2021

Answer:

A' (- 1, - 5 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ), then

A (- 5, 1 ) → A' (- 1, - 5 )

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