1.

The upper (3)/(4)the portion of a verticalpole subtendsan angleTan ^(-1) ""(3)/(5)at a point in the horizontalplane throughits foot and at a distance40mfrom thefoot. Giventhat the verticalpole is at a heightless than 100 mfrom the ground. then its height is

Answer»

`40 `
` 80 `
` 60 `
` 20 `

ANSWER :A


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