You and a friend decide to set up a volleyball net in your backyard. Each pole that holds the net has a string to secure it to the ground for stability. If the pole is 8 feet tall after being placed in the ground and the stability string is 12 feet long, what is the approximate angle formed between the pole and the string?

1 answer

To find the angle formed between the pole and the string, we can consider the pole, the string, and the ground as forming a right triangle. In this triangle:

  • The height of the pole is one leg of the triangle, which measures 8 feet.
  • The length of the string is the hypotenuse of the triangle, which measures 12 feet.

We can denote the angle between the pole and the string as \( \theta \).

We can use the trigonometric function cosine to find this angle:

\[ \cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}} = \frac{8}{12} \]

Calculating this gives:

\[ \cos(\theta) = \frac{2}{3} \approx 0.6667 \]

Now, we can find the angle \( \theta \) by taking the inverse cosine:

\[ \theta = \cos^{-1}\left(\frac{2}{3}\right) \]

Using a calculator:

\[ \theta \approx 48.19^\circ \]

Thus, the approximate angle formed between the pole and the string is:

\[ \boxed{48.2^\circ} \]