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AB is a vertical pole with B at the gr...

AB is a vertical pole with B at the ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is `60o` . He moves away from the pole along the line BC to a point D such that `C D""=""7""m` . From D the angle of elevation of the point A is `45o` . Then the height of the pole is (1) `(7sqrt(3))/2 1/(sqrt(3)-1)m` (2) `(7sqrt(3))/2 sqrt(3)+1m` (3) `(7sqrt(3))/2 sqrt(3)-1m` (4) `(7sqrt(3))/2 sqrt(3)+1m`

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To find the height of the vertical pole AB, we can use the information given about the angles of elevation from points C and D. ### Step-by-Step Solution: 1. **Define Variables:** - Let the height of the pole AB be \( H \). - Let the distance from point B (the base of the pole) to point C be \( BC = B \). - The distance from point C to point D is given as \( CD = 7 \, m \). ...
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