1.

A flag staff of length 10 mt stands on a tower if from a point on the ground , the angle of elevation of the foot and the top of the flagstaff are 45 ^(@) and 75 ^(@)then height of the tower is

Answer»

` 5( SQRT3+ 1) `
` (80 )/(sqrt3) (sqrt3+ 1) `
` ( 80 (sqrt3+ 1)) /( 3sqrt3) `
` 5(sqrt3-1) `

Answer :D


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