Find the degree measure of the arc if the arc length is 12m and the radius is 20m

A' (-1,3)

B' (2, -2)

C' (-3, -3)

Step-by-step explanation:

when rotating 90 degrees, you first invert the x value (if it is a positive make it a negative and if it is a negative make it a positive) and then you switch the x and y values.

for example, (1,2) would turn into (-2,1) after rotated 90 degrees.

I attached a file of both of the graphs. The blue is the original and the orange is the rotated one. hope it helps!