1.

The angle of elevation of the top of a pillar at any point A on the ground is\[{{15}^{o}}\]. On walking 40 metres towards the pillar, the angle become\[{{30}^{o}}\]. The height of the pillar is [MP PET 2001]

A. 40 metres
B. 20 metres
C. \[20\sqrt{3}metres\]
D. \[\frac{40}{3}\sqrt{3}metres\]
Answer» C. \[20\sqrt{3}metres\]


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