## Trigonometry Formulas for Class 10 Maths Chapter 8

Are you looking for Trigonometry formulas for class 10 chapter 8? Today, we are going to share Trigonometry formulas for class 10 chapter 8 according to student requirements. You are not a single student who is searching Trigonometry formulas for class 10 chapter 8. According to me, thousands of students are searching Trigonometry formulas for class 10 chapter 8 per month. If you have any doubt or issue related to Trigonometry formulas then you can easily connect with through social media for discussion. Trigonometry formulas will very helpful to understand the concept and questions of the chapter Trigonometry. I would like to suggest you remember Trigonometry formulas for the whole life. It also helps you with higher studies.

Trigonometric Identities |

\( \sin ^2 A + \cos ^2 A = 1 \) |

\( \tan ^2 A + 1 = \sec ^2 A \) |

\( \cot ^2 A + 1 = {\rm{cosec}}^2 A \) |

Relations between Trigonometric Identities |

\( \tan A = \frac{{\sin A}}{{\cos A}} \) |

\( \cot A = \frac{{\cos A}}{{\sin A}} \) |

\( {\rm{cosec}}\,A = \frac{1}{{\sin A}} \) |

\( \sec A = \frac{1}{{\cos A}} \) |

Trigonometric Ratios of Complementary Angles |

\( \sin \left( {90^\circ – A} \right) = \cos A \) |

\( \cos \left( {90^\circ – A} \right) = \sin A \) |

\( \tan \left( {90^\circ – A} \right) = \cot A \) |

\( \cot \left( {90^\circ – A} \right) = \tan A \) |

\( \sec \left( {90^\circ – A} \right) = {\rm{cosec}}\,A \) |

\( {\rm{cosec}}\left( {90^\circ – A} \right) = \sec A \) |

Values of Trigonometric Ratios of 0° and 90° |
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\(\angle A\) | \(0^\circ \) | \(30^\circ \) | \(45^\circ \) | \(60^\circ \) | \(90^\circ \) |

\(\sin A\) | \(0\) | \( \frac{1}{2} \) | \( \frac{1}{{\sqrt 2 }} \) | \( \frac{{\sqrt 3 }}{2} \) | \(1\) |

\(\cos A\) | \(1\) | \( \frac{{\sqrt 3 }}{2} \) | \( \frac{1}{{\sqrt 2 }} \) | \( \frac{1}{2} \) | \(0\) |

\(\tan A\) | \(0\) | \( \frac{1}{{\sqrt 3 }} \) | \(1\) | \( \sqrt 3 \) | Not Defined |

\(\sec A\) | \(1\) | \( \frac{2}{{\sqrt 3 }} \) | \( \sqrt 2 \) | \(2\) | Not Defined |

\(\text{cosec } A \) | Not Defined | \(2\) | \( \sqrt 2 \) | \( \frac{2}{{\sqrt 3 }} \) | 1 |

\(\cot A\) | Not Defined | \( \sqrt 3 \) | \(1\) | \( \frac{1}{{\sqrt 3 }} \) | 0 |

#### Summary of Trigonometry formulas

We have listed top important formulas for Trigonometry for class 10 chapter 8 which helps support to solve questions related to the chapter Trigonometry. I would like to say that after remembering the Trigonometry formulas you can start the questions and answers solution of the Trigonometry chapter. If you faced any problem to find a solution of Trigonometry questions, please let me know through commenting or mail.

#### Chapter-wise Maths Formulas for Class 10

- Chapter 2 Polynomials
- Chapter 4 Quadratic Equations
- Chapter 5 Arithmetic Progressions
- Chapter 6 Triangles
- Chapter 7 Coordinate Geometry
- Chapter 8 Introduction to Trigonometry
- Chapter 10 Circles
- Chapter 12 Areas Related to Circles
- Chapter 13 Surface Areas and Volume
- Chapter 14 Statistics
- Chapter 15 Probability