A pole stands vertically on a road, which goes in the north-south direction. P, Q are two points towards the north of the pole, such that PQ = b, and the angles of elevation of the top of the pole at P, Q are a, B respectively. Then the height of the pole is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 
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Understanding |
Application |
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PO = h cot α QO = h cot β PQ = h(cot α + cot β)
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