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gregori [183]
3 years ago
9

The line segment shown is rotated 90° about the origin (counterclockwise). What are the new coordinates of point A? A) (2, 1) B)

(-2, 1) C) (-2, -1) D) (1, 2)
Mathematics
2 answers:
posledela3 years ago
8 0

Answer:

A. (2,1)

Step-by-step explanation:

rjkz [21]3 years ago
3 0

Under a counterclockwise rotation about the origin of 90°

a point (x , y ) → (- y, x ), hence

A(2, 1 ) → A'(- 1, 2 )


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