A guy wire to the top of a tower makes an angle of 68° with the level ground. At a point 30 feet farther from the base of the tower and in line with the base of the wire, the angle of elevation to the top of the tower is 25°. What is the length of the guy wire?
a. none of the provided
b. 18.59 ft
c. 40.79 ft
d. 65.82 ft
e. 13.67 ft