Height and Distance
The angle which is above the horizontal line and the condition from which the angle is formed by the line of sight with the horizontal line is called angle of elevation. The angle which is below the horizontal line and the condition from which the angle is formed with the horizontal line is called angle of depression.
Summary
The angle which is above the horizontal line and the condition from which the angle is formed by the line of sight with the horizontal line is called angle of elevation. The angle which is below the horizontal line and the condition from which the angle is formed with the horizontal line is called angle of depression.
Things to Remember
- The angle which is above the horizontal line and the condition from which the angle is formed by the line of sight with the horizontal line is called angle of elevation.
- The angle which is below the horizontal line and the condition from which the angle is formed with the horizontal line is called angle of depression.
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Height and Distance
Angle of Elevation
The angle which is above the horizontal line and the condition from which the angle is formed by the line of sight with the horizontal line is called angle of elevation.
In the given figure, the object is at a higher level than the observer's eye. So, ∠ACB = θ is the angle of elevation.
Angle of Depression
The angle which is below the horizontal line and the condition from which the angle is formed with the horizontal line is called angle of depression.
Let, In the given figure, the object is at a lower level than the observer's eye. Therefore ∠PQR = θ is the angle of depression.
Lesson
Trigonometry
Subject
Optional Maths
Grade
Grade 8
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