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OpenStudy (anonymous):
The image of a point after a –90° rotation about the origin is (–4, 7). What are the coordinates of the preimage?
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Miracrown (miracrown):
This is an interesting question! Are you familiar with the equations for the rotation of a coordinate system? @jamilkousa
Miracrown (miracrown):
We can work this problem from 1st principles if you wish.
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