Complete this in JavaFX

Problem Description: Draw a circle with three random points on the circle. Connect the points to form a triangle. Display the angles in the triangle. Use the mouse to drag a point along the perimeter of the circle. As you drag it, the triangle and angles are redisplayed dynamically 60 Here is the formula to compute angles: Here is the formula to compute angles: x2, y2 Aacos ((a a -b * b c * c) / (-2 b * c)) B=acos((b * b-a*a-c*c) / (-2 * a * c) ) C=acos((c * c _ b * b-a*a) / (-2 * a * b) ) x3. y3 x1, yl