Question

Total length of guy wire.

Answer 1

Height = 25'
vertical angle = 30 degrees
the length of each guy wire = 25/cos(30)=28.8675'
Diagram shows two guy wires, so total length
L=2*28.8675' = 57.735'

Answer 2

Check the picture below

since the guy wire goes up then down, so is 2x long.