From two points x and y, 8m apart, and in line with a pole, the angle of elevation of the top of the pole are 30o and 60o respectively. Fins the height of t...
From two points x and y, 8m apart, and in line with a pole, the angle of elevation of the top of the pole are 30o and 60o respectively. Fins the height of the pole assuming that x, y and the foot of the pole are the same horizontal plane and x and y are on the same side of the pole.
Answer Details
From the diagram, WYZ = 60o, XYW = 180o - 60o = 120o LX = 30o XWY = 180o - 120o + 30o XWY = 30o WXY = XYW = 30o Side XY = YW YW = 8m, sin 60o = 32 ? sin 60o = hYW, sin 60o = h8 h = 8 x 32 = 4?3