0 Comments
Explanation:
Angle BDC is an angle inscribed in a circle. As such it intercepts TWICE as many degrees of arc as its measure
so: 2 * (3x-1.5) = 3x+9
6x -3 = 3x+9
x = 4
then the arc AC = 3x+9 = 21 degrees
9.4m questions
12.2m answers