An important and exam oriented question from trigonometry (height and distance) in which we have to calculate the height of tower, if A vertical tower stands on a horizontal plane and is surmounted by a vertical flagstaff of height 6m. At a point on the plane, the angle of elevation of the bottle and top of the flagstaff are 30° and 45° respectively.
Book – RS Aggarwal, Class 10, chapter 14, question no 7
Hope it helps you.