Trigonometry formula for class 10. Trigonometry is the part of Mathematics. It deals with various basic concepts of trigonometry. The whole trigonometry is not discussed in class 10th. Rather it just an introduction for the students. Students have to learn the advanced trigonometry in their next standard. The board exam contains ten percent marks from these topics. Moreover, these topics are not considered as the toughest part in the tenth grade. Although it is a new topic for the student of tenth grade, they can understand these topics easily with the help of this article. We can start with some basic concepts in our following topics.

Basic trigonometry formula for class 10

There are six trigonometric ratios:


S.No Trigonometric Ratio Ratio
1 Sin Ɵ P/H
2 Cosine Ɵ B/H
3 Tangent Ɵ P/B
4 Cosecant Ɵ H/P
5 Secant Ɵ H/B
6 Cotangent Ɵ B/P

Where  P= perpendicular, B=base, and H= hypotenuse.


The above mentioned trigonometric ratios explain the concept behind the application of trigonometric ratios. All these ratios are only applicable to the right angle triangle. The right-angle triangle contains three sides of the triangle namely perpendicular, hypotenuse, and base.

The angle other than a right angle is considered as the trigonometric ratio.


ALL trigonometry formula for class 10 is listed as under.

  • Sin Ɵ =1/Cosec Ɵ
  • Cosine Ɵ =1/Sec Ɵ
  • Tangent Ɵ =1/Cot Ɵ = Sin Ɵ/Cos Ɵ
  • Sin (90 – Ɵ) = Cos Ɵ
  • Cos (90- Ɵ) = Sin Ɵ
  • Tan (90- Ɵ) = Cot Ɵ
  • Sec (90- Ɵ) = Cosec Ɵ
  • Cosec (90- Ɵ) = Sec Ɵ
  • Cot (90- Ɵ) = tan Ɵ



  • Sin2 Ɵ + cos2 Ɵ = 1
  • 1 + tan2 Ɵ = sec2 Ɵ
  • 1 + cot2 Ɵ = cosec2 Ɵ

These are the three main identities that are given in standard 10th. You can derive different formulas and prove from these identities. In order to help students in learning these formulas and identities, we have kept it in standard form. These trigonometric identities are enough to solve the remaining identity.


Trigonometric identity is not very hard to understand. We have a very good experienced teacher that can do it for you. Our teachers can understand your ward psychology and then apply it accordingly for better results. We have a well-experienced teacher that can help you to understand the trigonometry easily within one or two classes. You can understand every aspect of it through our teacher’s guidelines. Good and bad marks are not important for the future. Marks are just a number; we have to understand the concept that’s most important for a successful career. You can call us at any time. Feel free to contact us. Come and learn with us to get instant results.

Students must know each and every section well in order to obtained good marks in their exams. Trigonometry is also a part of a section. It is also important for further classes. Our tutors are so experienced and expert that they can give the student a good idea about the trigonometric ratio. Tutors from citizen home tutors are well aware of the psychology of the students and then do all the experts. Although, you can experience yourself about this.

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