what is the length of spencer's run

Question

Spencer went snowboarding. He rode the ski lift to the top of the mountain, which is at an altitude of 1500 feet. the angle of elevation from the bottom to the top is 25 degrees. What is the length of the Spencer's run (his trip down the hill)? Round your answer to the nearest tenth of a foot. 

Answer 1

r = length of run

sin 25° = 1500 / r

r sin 25° = 1500

r = 1500 / sin 25°

r ≈ 1500 / 0.4226

r ≈ 3549.455