find height
standing at 5m apart from a vertical pole of height 3m ,sudha observed a bulding at the back of the piller that tip of the pillar is in line with the top of the bulding . if the distance between pillar and bulding is 10m, estimate the height of the bulding . [here height of sudha is neglected]
The answer is 9.
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let she obseve the building with angle A let height of building be h TanA=3/5=h/15=>h=15*3/5=9