Trigonometry Formulas For Class 10

Trigonometry is the study of relationships between angles, lengths, and heights of triangles. It includes ratios, function, identities, formulas to solve problems based on it, especially for right-angled triangles. Applications of trigonometry are also found in engineering, astronomy, Physics and architectural design. This chapter is very important as it comprises many topics like Linear Algebra, Calculus and Statistics.

Trigonometry is introduced in CBSE class 10. It is a completely new and tricky chapter where one needs to learn all the formula and apply them accordingly. Trigonometry Class 10 formulas are tabulated below.

Trigonometric Formulas

Trigonometry Formulas for Class 10

Applying Pythagoras theorem for the given right-angled triangle, we have:



The Trigonometric properties are given below: Property Mathematical value
1 sin A Perpendicular/Hypotenuse
2 cos A Base/Hypotenuse
3 tan A Perpendicular/Base
4 cot A Base/Perpendicular
5 cosec A Hypotenuse/Perpendicular
6 sec A Hypotenuse/Base

Relation Between Trigonometric Identities: Identity Relation
1 tan A sin A/cos A
2 cot A cos A/sin A
3 cosec A 1/sin A
4 sec A 1/cos A

Trigonometric Identities:

  1. sin2A + cos2A = 1
  2. tan2A + 1 = sec2A
  3. cot2A + 1 = cosec2A


  1. Thank-you

  2. Thanks sir for understanding of TRIGONOMETRY

  3. thnx the notes were absolutely helpful

  4. This is so helpful thank you so much Byjus☺️

  5. Don’t Stop Here Only It would be better If you would Give more formulas in free.
    It may become blessing for someone Hence please write down all the formula of trigonometry. I am the teacher of Excellence Public School. If you will do this for poor students so they would be very thankful to you in fact I will be also.
    Thankyou Somuch😊😊😊

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