Answer and Explanation
Your Answer is
Correct Answer is H
Explanation
The radius of the circle is 1, so AB=1; the coordinates of the center B are (2,0), so OB=2; then Sin∠AOB=AB/OB=1/2, so ∠AOB=30.
24. Graphed in the standard (x, y) coordinate plane below is line I and the circle with equation 
. Line I passes through O(0,0) and is tangent to the circle at A, and B is the center of the circle. What is the measure of ∠AOB?
