I bet it is a 3-4-5 triangle.
However, in real life, such a cable would be foolish as an antenna feed, due to wind load, and worse, lighting which strikes the tower...the impedance of the tower would be far greater to lightening current flow than the cable, and as a result, the transmaitter box would be toast.
An electrician needs to run a cable from the top of a 40-foot tower to a transmitter box located 30feet away from the base of the tower. Find how long he should make the cable
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