A 20-foot-tall flagpole casts a 13-foot shadow on the ground. What is the angle of elevation from the tip of the shadow to the top of the flagpole? Round to the nearest whole degree.A 20-foot-tall flagpole casts a 13-foot shadow on the ground. What is the angle of elevation from the tip of the shadow to the top of the flagpole? Round to the nearest whole degree.

To find the angle of elevation, we can use the tangent function:

tan(angle) = opposite/adjacent

In this case, the opposite side is the height of the flagpole (20 feet) and the adjacent side is the length of the shadow (13 feet). So:

tan(angle) = 20/13

Now, we need to find the angle whose tangent is approximately 20/13. Using a calculator, we find that:

angle ≈ tan^-1(20/13) ≈ 56.31 degrees

Rounded to the nearest whole degree, the angle of elevation is 56 degrees.