Answer :


Let h be the height of the tower


tan 30°= h/ AB (tan θ = perpendicular / base)


………..1


When the height is tripled h becomes 3h


tan θ = 3h / AB


tan θ = (from 1)


tan θ =


tan θ = √3 ( by rationalizing the denominator)


θ = 60° (tan 60° = √3)


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