Direction: consider the two circles
S1 ≡ x2 + y2 - 6x + 4y + 11 = 0 and S2 ≡ x2 + y2 - 4x + 6y + 9 = 0.
The angle of intersection of the two circle is
1
30°
2
45°
3
60°
4
90°
Direction: consider the two circles
S1 ≡ x2 + y2 - 6x + 4y + 11 = 0 and S2 ≡ x2 + y2 - 4x + 6y + 9 = 0.
The angle of intersection of the two circle is