Zero angle launch problem: Find height given inital speed and angle

[egadda2]

Homework Statement

A basketball is thrown horizontally with an initial speed of 4.40 m/s. A straight line is drawn from the release point to the landing point making an angle of 30.0^o with the horizontal. WHAT WAS THE RELEASE POINT?

Homework Equations

tan$$\theta$$ = y/x
v_fx= v_ix= 4.40 m/s
v²_fy = v²_iy - 2a$$\Delta$$y

a = -g = -9.81
[c]3. The Attempt at a Solution [/b]

 

[tiny-tim]

Hi egadda2!

(have a theta: θ )

Find the equation for x and t, and the equation for y and t, then put y = xtanθ, and eliminate t.