Finding the angle of impact when a ball rolls off a table

[TheTopGun]

Homework Statement

A ball rolls off a table at speed v and impacts the floor at distance d.

What is the angle between the path of the ball and a vertical line drawn at the moment of impact.

Homework Equations

I have derived from basic projectile motion formulae:

Time of impact t = sqrt(2h/g)

Distance d = Vox * sqrt(2h/g)

Velcocity at impact = sqrt(Vox^2 - gt^2)

The Attempt at a Solution

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I don't really know where to start, I believe I have all the required information above but how do I apply it ?

 

[TheTopGun]

Is this correct ?

https://dl.dropboxusercontent.com/u/53341615/IMG_20150617_173554781.jpg

This is actually a mathematics topic question and should somehow relate back to vector calculus

 

[TheTopGun]

Nvm got it sorted. Can't figure out how to delete thread ?