The range of a projectile fired at an angle θ with the

Last updated: 8/7/2022

The range of a projectile fired at an angle θ with the horizontal and with an initial velocity of v₀feet per second is r =1/32v₀² sin(2θ) where r is the horizontal distance (in feet) the projectile travels. An athlete throws a javelin at 75 feet per second. At what angle must the athlete throw the javelin so that the javelin travels 115 feet? (Assume θ< 45°. Round your answer to two decimal places.)