Telegraph poles

The bases of two adjacent telegraph poles have a height difference of 10.5 m. How long do the wires connect the two poles if the slope is 39° 30´?

Correct result:

x =  16.5074 m

Solution:

h=10.5 m A=39+30/60=792=39.5  sinA=h:x x=h/sinA=h/sin39.5 =10.5/sin39.5 =10.5/0.636078=16.507=16.5074 m



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