Projectile Motion - baseball popup

[blackraven]

Projectile Motion -- baseball popup

Homework Statement

A baseball is popped up, remaining aloft for 6.3 s before being caught at a horizontal distance of 83 m from the starting point. What was the launch angle?

Homework Equations

vx = vcostheta
vy = vcostheta

The Attempt at a Solution

I tried solving for vx and vy then take those and find the arctan but then there was an erroron my caclculator. Besides, I think I'm doing something wrong.

 

[nrbhyagrwl]

Vx= V*CosQ
Vy=V*SinQ
t= 2*Vy/g=6.3 =>Vy=30.87 m/s
Range= Vx*t=83m => Vx=13.17 m/s
Vy/Vx=TanQ=66 Degrees