I don't know how to even approach this... It's suppose to be on my physics test.

Question

A huntsman fires a gun pointing at a monkey hanging on the branch of a tree. The huntsman and the base of the tree are on a flat horizontal. At the moment the huntsman fires the gun, the monkey will release it's grip on the branch of the tree. Use the initial bullet velocity Vo, horizontal distance Dx, monkey height Dy, and inital trajectory angle above.

a)Show the monkey shouldn't have dropped

b)For what minimum bullet velocity? Vo = (Dx/cos0)(sqrt(g/2Dy))

So I need to show that the monkey shouldn't have dropped when the bullet was fired somehow.... And then I have to find what minimum bullet velocity.

Thank you so much guys..