40. The angles of elevation of the ...
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40. The angles of elevation of the top of a tower 30 m. High, from two points on the level ground on its opposite sides are 45° and 60° what is the distance between the two points? (1) 47.32 m (2) 41.23 m (3) 38.12 m (4) 52.10 m

11th - 12th Class
Maths
Solution
49
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In ( triangle A B D ) ( A D=B D quadleft(because 45^{circ}-45^{circ}-90^{circ} text { triangle }right) ) ( therefore B D=30 mathrm{m} ) In ( triangle A C D ) (1) ( 47 cdot 32 )
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