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Trigonometry is a greek word where 'trignon' means ''triangle'' and 'metron' means ''measure''.
A trigonometry is a branch of mathematics which help us to understands the relationship involving the length and angles of triangles. There are six functions of an angle commonly used in trigonometry, the names and abbreviation are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).
In this chapter we will study the following topics-
-trigonometric ratios
-trigonometric ratios of some specific angles,
-trigonometric ratios of complementary angles,
-trigonometric identities

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### Lecture 15: Trigonometry Part- 15

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Trigonometry is a greek word where 'trignon' means ''triangle'' and 'metron' means ''measure''.
A trigonometry is a branch of mathematics which help us to understands the relationship involving the length and angles of triangles. This chapter we will concentrate on the heights and distance of trigonometry.

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### Lecture 4: Some Application Of Trigonometry Part- 3

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Published    14-Jun-2017      Bilingual

Trigonometry Course | CBSE Class 10 Maths (Class X)
TRIGNOMETRY
Mr. Sameer Kohli is the most interactive teacher of Study Khazana. He teaches the students of class IX, X, XI, and XII. Further, he has 18 years of experience and this experience has made many students score the best result. A topic taught by sir cannot be forgotten. The topics and sub-topics in Chapter 8 Introduction to Trigonometry
1 Introduction,
2 Trigonometric Ratios,
3 Trigonometric Ratios of Some Specific Angles,
4 Trigonometric Ratios of Complementary Angles,
5 Trigonometric Identities and
6 Summary.

#### Sameer Kohli

Mr. Kohli, founder of Jupiter Education Planet, is a visionary in the field of education and holds an experience of more than 15 years as a Mathematics and Science teacher. Owing to his student-friendly teaching style, he has been able to build an unflinching reputation for himself. He is not only an excellent teacher who has delivered exceptional results throughout his career, but also has a deep insight into child and parent psychology. Over the years, he has acquired expertise in the areas of motivation and counselling of parents and children to help them take better decisions. With a passion to change lives for the better, Mr. Kohli knows the right approach to help children in optimum decision making at both personal and professional level.

##### Qualification

B.Sc. (Hon.) (D.U.)

10 years

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