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B is a point situated vertically upwards on A at a distance of a unit. C is a point at a height ‘2a’ units from a horizontal passing through A and the angles of elevation of C from A and B are and respectively, then
detailed solution
Correct option is C
We have tanβ=ax, tanα=2ax=2.tanβ ∴ cotα.tanβ=12Talk to our academic expert!
Similar Questions
The angle of elevation of top of an unfinished tower at a point distance 120m from its base is 450. How much height must the tower be raise so that angle of elevation of top at the same point to be 600.
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