Posted by **Roslyn** on Monday, March 29, 2010 at 10:33pm.

Guy wires 80 feet long support a 65-foot tall telephone pole. To the nearest degree, what angle will the wires make with the ground?

- math -
**MathMate**, Monday, March 29, 2010 at 10:52pm
Draw a diagram, and it will be clear that the pole is opposite to the angle the wire makes with the ground.

Since the wire is at an angle, it is also the hypotenuse of the right triangle.

The ratio

sin(θ)=opposite/hypotenuse

=65/80

is what you need to find the angle using θ=sin^{-1}(65/80).

Post your answer for a check if you wish.

- math -
**Jake**, Thursday, February 9, 2012 at 11:22am
0.8125

- math -
**Gtyf**, Tuesday, May 6, 2014 at 4:55pm
54

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