A projectile is shot from the edge of a cliff 136.0 m above the ground level with an initial speed of 86.00 m/s at an angle of 66.00 ° with the horizontal . a) Determine the time taken by the projectile to hit point P at ground level. b) Determine the range X of the projectile as measured from the base of the cliff. c) Find the maximum height above the cliff top reached by the projectile.