Aball is orbiting counterclockwise at 100 revolutions per minute (rpm) around a circle of radius 10 cm. the center of the circle is at the x-y origin (0, 0). at t = 0, the ball is at (10 cm, 0). when does the ball first reach the y axis?

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

with btw u said 100pts but it clearly says

i answerd and just got 10pts

no hate