Question 40738
A guy wire (a type of support used for example, on radio antennas) is attached to the top of a 50 foot pole and stretched to a point that is d feet from the bottom of the pole. Express the angle of inclination as a function of d. 

tan(angle of inclination) = 50/d
angle of inclination = arctan(50/d)
Cheers,
Stan H.