CBSE Class 10 Maths Notes Chapter 9: Students in Class 10 will learn how to use trigonometry to calculate various objects' heights and distances without having to measure them in Chapter 9, "Some Applications of Trigonometry."
Astronomers used to calculate the distance between the planets, the Earth, and the stars using trigonometry. Trigonometry is most commonly used in geography and navigation to determine the latitude and longitude of a given point. In this chapter, students will be able to study about topics like horizontal lines, angles of depression, elevation and depression, line of sight, and heights and distances. By working through the issues, students may really understand the principles. In this chapter, every numerical problem is handled using trigonometric ratios.CBSE Class 10 Maths Notes Chapter 9 PDF
CBSE Class 10 Syllabus 2024-25
Trigonometry Ratios Table | ||||||||
Angles (In Degrees) | 0° | 30° | 45° | 60° | 90° | 180° | 270° | 360° |
Angles (In Radians) | 0° | π/6 | π/4 | π/3 | π/2 | π | 3π/2 | 2π |
sin | 0 | 1/2 | 1/√2 | √3/2 | 1 | 0 | -1 | 0 |
cos | 1 | √3/2 | 1/√2 | 1/2 | 0 | -1 | 0 | 1 |
tan | 0 | 1/√3 | 1 | √3 | ∞ | 0 | ∞ | 0 |
cot | ∞ | √3 | 1 | 1/√3 | 0 | ∞ | 0 | ∞ |
cosec | ∞ | 2 | √2 | 2/√3 | 1 | ∞ | -1 | ∞ |
sec | 1 | 2/√3 | √2 | 2 | ∞ | -1 | ∞ | 1 |