3u

1u

OD= \sqrt{ 3^2+1^2 }=  \sqrt{ 10 } 

AE= \sqrt{ 10 } 

O = (-3, 2)
B = (6, 2)
a = Ray(O, B)
C = Point(a)
D = (0, 3)
b = OrthogonalLine(D, a)
c = Segment(D, O)
d = Circle(O, D)
E = Intersect(d, a, 1.0)
F = Intersect(d, a, 1.0)