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the answer is here
hope it will help you
hope it will help you
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height is perpendicular to ground so traingle becomes right angle triangle so so sin A=opp side/hyp. that is sin60=h/215. therefore. root 3/2=h/215 hence root 3*215/2=h. angle is reduced so now it becomes 45 now while cable length is same sin45 =opp/hyp. that is. 1/root2*215=small h substracting smaller height from grater height and calculating we get. 215(root6-1/2root2) hope so this will be right answer
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