can you please help me answer these orthogonal and isogonal trajectories?

Prob. 1 Find the orthogonal trajectories of the family of curves 1:2 = 4Cy3 Prob. 2 Find the isogonal trajectories of the circles x2 + y2 = C if the angle of intersection are to be 45. Remarks: If R(x,y) intersect G(x,y) at right angle or a) = 90 , the R(x,y) is called the orthogonal trajectories of mix, 1'). To determine the orthogonal trajectories R(x. y) use the formula, (\"1) = 11 \"I R (5 To determine the isogonal trajectories of R(x, y) knowing G (x, y) and angle til , use the formula, (13-33(36) i3: Arctanm where (iiDR Derivative of the required family of curves (3: G Derivative of the given family of curves