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A support wire reaches from the top of a pole to a clamp on the ground. The clamp is 10 feet from the base of the pole The support wire makes a 68 angle with the ground. Find the length of the support wire

Ask by Harmon Schneider. in the United States
Jan 24,2025

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The support wire is approximately 26.7 feet long.

Solución

To determine the length of the support wire, we can model the situation using a right triangle: - **Adjacent side (base):** 10 feet (distance from the base of the pole to the clamp) - **Angle with the ground:** 68° - **Hypotenuse (support wire):** Unknown, which we need to find We can use the **cosine** trigonometric function, which relates the adjacent side and the hypotenuse in a right triangle: \[ \cos(\theta) = \frac{\text{Adjacent}}{\text{Hypotenuse}} \] Plugging in the known values: \[ \cos(68°) = \frac{10}{\text{Hypotenuse}} \] Solving for the hypotenuse: \[ \text{Hypotenuse} = \frac{10}{\cos(68°)} \] Calculating the cosine of 68 degrees: \[ \cos(68°) \approx 0.3746 \] Now, compute the length of the support wire: \[ \text{Hypotenuse} = \frac{10}{0.3746} \approx 26.7 \text{ feet} \] **Therefore, the support wire is approximately 26.7 feet long.**

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Bonus Knowledge

To find the length of the support wire, we can use some trigonometry! Since the wire forms a right triangle with the pole and the distance from the pole to the clamp, we can use the sine of the angle. The formula to find the length of the wire (hypotenuse) is: Length = Distance from pole * (1/cos(68 degrees)). Given that the distance from the pole is 10 feet, the wire's length is approximately 10.8 feet! Now, don't forget to double-check with a calculator to ensure the sine values are used correctly. Trigonometry can sometimes trip you up with angles, so take your time when doing your calculations to avoid any small mistakes!

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