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The sum of angles of elevation of the top of tower from two points distant a and b from the base and in the same straight line with it is $90^{\circ}$. Then the height of the tower is :
\[\begin {array} {1 1} (1)\;a^2b & \quad (2)\;ab^2 \\ (3)\;\sqrt {ab} & \quad (4)\;ab \end {array}\]
jeemain
eamcet
math
2010
q30
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Sep 26, 2013
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meena.p
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$(3)\;\sqrt {ab}$
answered
Nov 7, 2013
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pady_1
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Jan 2, 2014
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meena.p
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