Assume the initial velocity is 60 feet/second. what initial angle will you need tp ensure that the horizontal distance will be exactly 100 feet

This is a problem pertaining projectile motion wherein the parameter we're finding is the angle of inclination denoted as theta. The formula to be used is the range:

Range = v^2*sin(2*theta)*(1/g)
100 = (60^2) * sin(2*theta) * (1/32.2)
theta=31.7°

I hope I was able to help you. Have a good day!

Suredude why not right