Hi takersgirl007,

So glad you edited your picture. Now we can read it.

If you randomly position point C between points R and S such that angle C is always 70 degrees, you will always intercept an arc of 140 degrees.

You have 220 degrees of arc on which to place point C (360 - 140 =220).

The probability then would be r\: \frac{11}{18}" alt="\frac{220}{360} \r\: \frac{11}{18}" />