Angle Of Depression

Angle of Elevation

Angle of Depression

Before you study this topic you should know what is angle of elevation and depression: What is Angle of Depression ? The formulas we used in angle of depression : To find height and distance we use Cot θ = Adjacent Side / Opposite Side Example 1 : A person is standing on a tower which is 5m high and is looking at the ball down, the angle of depression is 45°. Find how far is the ball Solution : Let AB is the tower. A is the top and B is the foot of tower. C is the point on the ground where the ball is placed and is making a angle of depression of 45° If we draw a picture it will look like as below - So we get AB (Height) = 5m ∠ DCA (Angle of depression at point C) = 45° Distance BC = ? We know that Cot θ = Adjacent Side / Opposite Side cot 45° = BC / AB 1 = BC / 5 BC = 5 x 1 = 5 meters So the ball is 5 meters away from the tower Download Solved Worksheets Worksheet 1 Worksheet 2 Worksheet 3 Worksheet 4 Worksheet 5