Thanks Thaakisfox! Problem solved! 1. The problem statement, all variables and given/known data A track athlete leaves the ground with initial speed 10.2 m/s and makes an 8.8 meter long jump. Calculate the most likely angle of the direction of his take off with respect to the horizontal. Vo = 10.2 m/s x = 8.8 m xo = 0 m Ao = ? 2. Relevant equations x=Vo * CosAo * t Vx = VoCosAo 3. The attempt at a solution I have a missing t (time) variable or I'm using the wrong formula(s)?