SOLUTION: If the measure of the ABC = 40, which is the measure of the arc AC?

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Question 857374: If the measure of the ABC = 40, which is the measure of the arc AC?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming 40 is in degrees.
COnvert from degrees to radians.
40%28%282pi%29%2F360%29=%282%2F9%29pi
Then use,
AC=R%2Atheta
AC=R%2A%282%2F9%29pi
But you need to know the radius R.