Class 10 Maths Chapter 9 Some Applications of Trigonometry

 Some Applications of Trigonometry

Line of Sight 

When an observer looks from a point O at an object P then the line OP is called the line of sight. 

 Angle of Elevation 

The angle of elevation of an object viewed is the angle formed by the line of sight with the horizontal when it is above the horizontal level, i.e., the case when we raise our head to look at the object.

 Angle of Depression

The angle of depression of an object viewed is the angle formed by the line of sight with the horizontal when it is below the horizontal level, i.e., the case when we lower our head to look at the object.

NCERT Solutions For Class 10 Maths Chapter 9 Some Applications of Trigonometry