Projectile motion- Finding angle

Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water as shown. Although the fish sees the insect along a straightline path at angle � and distance d, a drop must be launched at a different angle �! if its parabolic path is to intersect the insect. If � = 36.0° and d = 0.900 m, what launch angle �! is required for the drop to be at the top of the parabolic path when it reaches the insect? ... https://www.youtube.com/watch?v=5w_eTdxiJ-s