Answer:
30 yd
Step-by-step explanation:
The diagram is probably something like the one below.
Raymond is at point A, at the top of the viewing post.
The zip-cable runs along line AC, and line BC represents the distance from the bottom of the viewing post to the bottom of the cable.
∆ABC is a right triangle, so we can apply Pythagoras’ Theorem.
x² + 40² = 50²
x² + 1600 = 2500 Subtract 1600 from each side
x² = 900 Take the square root of each side
x = 30 yd
The bottom of the cable is 30 yd from the bottom of the viewing post.
