Final answer:
The angle of elevation of the drawbridge is approximately 17.46 degrees.
Step-by-step explanation:
To find the angle of elevation of the drawbridge, we can use the trigonometric function tangent. The tangent of an angle is equal to the opposite side divided by the adjacent side. In this case, the opposite side is the height of the raised end of the drawbridge, which is 18 yards, and the adjacent side is the length of the drawbridge, which is 60 yards.
Therefore, the tangent of the angle of elevation can be calculated as: tan(theta) = 18/60. Using a scientific calculator or trigonometric tables, we can find the angle theta to be approximately 17.46 degrees.