Explanation:
Guy wire = hypotenuse = 639.4
adjacent Leg1 = 53.5
cos Φ = adjacent leg / hypoteuse = 53.5/639.4
arc cos ( 53.5 / 639.4 ) = Φ = 85.2 degrees
height = 639.4 sin (85.2) = 637.2 m
9.4m questions
12.2m answers