When a point is observed, the angle formed by the line of sight with the horizontal when the point being viewed is below the horizontal level is known as

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angle of contact

angle of depression

angle of elevation

None of the above

answer is A.

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Detailed Solution

The line drawn from the eye of an observer to the point in the object viewed by the observer is known as the line of sight.
Some Applications of Trigonometry Class 10th | MIT | Trigonometry

Some Applications of Trigonometry Class 10th | MIT | Trigonometry

The angle formed by the line of sight with the horizontal, when the point being viewed is below the horizontal level is called the angle of depression.
The required answer is the angle of depression.
Therefore, the correct option is 1.

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