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Q: If the angle of elevation of a balloon from two consecutive kilometer-stones along a road are 30° and 60° respectively, then the height of the balloon above the ground will be

A. $$ √3\over 2 km $$
B. $$ 1\over 2 km $$
C. $$ 2\over √3$$
D. 3√3
Answer» B. $$ 1\over 2 km $$


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