The angle of elevation of the top of a tower at point on the ground is\[{{30}^{o}}\]. If on walking 20 metres toward the tower, the angle of elevation become\[{{60}^{o}}\], then the height of the tower is [MNR 1975; IIT 1967]

The angle of elevation of the top of a tower at point on the ground is

1.	The angle of elevation of the top of a tower at point on the ground is\[{{30}^{o}}\]. If on walking 20 metres toward the tower, the angle of elevation become\[{{60}^{o}}\], then the height of the tower is [MNR 1975; IIT 1967]
A.	10 metre
B.	\[\frac{10}{\sqrt{3}}metre\]
C.	\[10\sqrt{3}metre\]
D.	None of these
Answer» D. None of these

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The angle of elevation of the top of a tower at point on the ground is\[{{30}^{o}}\]. If on walking 20 metres toward the tower, the angle of elevation become\[{{60}^{o}}\], then the height of the tower is [MNR 1975; IIT 1967]

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