A vertical tower stands on a horizontal plane and is surmounted by a flagstaff of height 6m. From a point on the plane, the angle of elevation of the bottom of the flag-staff is 30∘ and that of the top of the flag-staff is 45∘. Find the height of the tower.
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A vertical tower stands on a horizontal plane and is surmounted by a flagstaff of height 7 m. From a point on the plane, the angle of elevation of the bottom of the flag-staff is 30∘ and that of the top of the flag-staff is 45∘. Find the height of the tower.
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