A Projectile Is Fired at an Angle Above the Horizontal

Multiple Choice

A projectile is fired at an angle above the horizontal at a location where g = 9.8 m/s².The initial x and y components of its velocity are 86.6 m/s and 50 m/s respectively.At what angle was the projectile fired above the horizontal?

A) 45°
B) 60°
C) 30°
D) 90°
E) 75°