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From the top of a hill the angles of depression of two consecutive kilo meters stones due east are found to be 30 degree and 45 degree. Find the height of the hill.

Here, AB is the hill and P and Q are two consecutive kilometer stones.
Let the height of the hill AB be h m and BP = x m.
PQ = 1 km = 1000 m
In ?ABP,

 ? x = h    ...(1)

In ?ABQ,


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