Which algebraic rule describes the 90° clockwise rotation about the origin?

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

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation:

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.