Geometry
posted by Jackie .
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?

sinθ = 65/80
θ = arcsin(65/80)
θ = 54.34° 
solve A Flag Pole Has A Height Of 16 Yards. It Will Be Supported By Three Cables, Each Of Which Is Attached To The Flagpole At A Point 4 Yards Below The Top Of The Pole And Attached To The Ground At A Pole. Find the total number of feet of cable that will be required

This problem has some missing information. You know that the pole is 16 feet high, and the wires connect 12 feet up (164=12). If you found the length from the bottom of the pole to the grounding point, you could use the equation 12^2+X^2=L^2 with x standing for the length of the bottom of the pole to the grounding point. Another way you could figure this out is by finding the angle of the cable (A) coming up from the ground with equation Sin(A)=12/X with x being the length of the cable that you are trying to find.
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