The elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be . After walking 120 m towards it on level ground the elevation is found to be . Then the height of the object (in metres) is |
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a) |
120 |
b) |
c) |
d) |
60 |

The elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be . After walking 120 m towards it on level ground the elevation is found to be . Then the height of the object (in metres) is |
|||||||

a) |
120 |
b) |
c) |
d) |
60 |

1 Answer

127 votes

**(b)**

In

…(i)

and in ,

…(ii)

From Eqs. (i) and (ii), we get,

On putting in Eq.(i), we get

127 votes

127