# Revision Notes For CBSE Class 10 Maths Chapter 9 Some Applications of Trigonometry

Studying Chapter 9 is actually fun because this is where students learn about some of the ways in which trigonometry is used practically in our day to day lives. The chapter talks about the application of trigonometry in different fields like astronomy, geography and navigation. However, the main focus of this chapter is to help students learn about finding the heights and distances of various objects using trigonometry. As students will need to go through some important concepts like the angle of elevation, the angle of depression, and line of sight, etc. CBSE revision notes for class 10 maths chapter 9 – applications of trigonometry is provided here to help them clear all their doubts regarding the topics mentioned in this chapter. These notes further contain well-defined information that will aid students in easily mastering chapter concepts and studying efficiently. These notes can be downloaded freely.

## CBSE Class 10 Maths Chapter 9 Notes

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## Frequently asked Questions on CBSE Class 10 Maths Notes Chapter 9: Some applications of Trigonometry

Q1

### What are the uses of ‘Trigonometry’?

Trigonometry is used to set directions such as the north south east west, it tells you what direction to take with the compass to get on a straight direction. It is used in navigation in order to pinpoint a location.

Q2

### How many basic Trigonometric functions are there in total?

The six trigonometric functions are Sine, Cosine, Tangent, Secant, Cosecant and Cotangent.

Q3

### Who invented ‘trignometry’?

Trigonometry in the modern sense began with the Ancient Greeks. Hipparchus was the first to construct a table of values for a trigonometric function.