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A point A is directly below a window. Another point B is 15 m from A at the same horizontal level. From B the angle of elevation of the bottom of the window is #30^0# and the angle of elevation of the top of the window
is #35^0#. Calculate the vertical distance
(a) From A to the top of the window
(b) From A to the bottom of the window
(c) From the bottom to the top of the window