Respuesta :

A 90° clockwise rotation about the origin takes a point (x, y) and maps it to
(y, -x).

90 degrees clockwise rotation about the origin means

Let's say that the point is (x,y) and it lies in first quadrant .

Now the rotation is 90 degrees clockwise .

So the points shifts to second quadrant.

It means that x coordinate will stay positive and y coordinate will become negative now.

and x and y will interchange


So the exact rule is


(x,y) changes to (-y,x) ,

i.e. 1) Change the sign of y

2) Switch x and y

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