The document Important definitions and formulas - Some Application of Trigonometry Class 10 Notes | EduRev is a part of the Class 10 Course Mathematics (Maths) Class 10.

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**⇒ Line of sight:** The line drawn from the eye of an observer to a point in the object where the person is viewing is called the line of sight.**⇒ Angle of elevation:** The angle formed by a line of sight OP with the horizontal line OX when the object is above the horizontal line is called the angle of elevation.**⇒ Angle of depression:** The angle formed by a line of sight OP with the horizontal line OX when the object is below the horizontal line is called angle of depression.

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