A bomber on a military mission is flying horizontally at height H, horizontally above the ground at velocity V. In order to determine the angle, which of the following formula can the pilot or military base use?
A. U-1 x √gh/2
B. Tan-1 (U-1 • √gh/2)
C. Tan-1 (U-1 • √gh/2) - 90
D. 90 - cos -1 (U-1 • √gh/2)