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A drain pipe is to be laid between two points One point is 13 m higher in elevation than the other point The pipe is to slope at an 7.5 degrees with the horizontal Compute the length of the drain pipe?
Fittazjonez
Here we have a triangle with angle A 7.5deg and opposite side O 13m, and we're looking to find the hypotenuse H which would be the drain pipe. Remember sin A=O/H, so H=O/sinA. H=13/sin7.5= 99.6m
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