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nt1 As observed from top of the light house of height 'h' m,the angles of depression of two ships approaching it are alpha and beta .if one ship is coming from west and other from south find the distance between the ships.n ntn nt2 A vertical tower stands on ahorizontal plane and is surmounted by a vertical flagstaff of height h .At apoint on the plane the angles of the elevation of the top and bottom of the flagstaff are theta and alpha respectively.find the height of the tower.n
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