Sin, cos, tan

Basic Trigonometry  Quick Recap.jpg


Value of sin, cos, tan at different angles

Basic Trigonometry – A Quick Recap - Part 2


Basic Identities

cos 2  θ + sin 2  θ = 1

1 + tan 2  θ = sec 2  θ

1 + cot 2  θ = cosec 2  θ

  1. Chapter 3 Class 11 Trigonometric Functions (Term 2)
  2. Concept wise


In right triangle ABC sinβ‘πœƒ= (𝑠𝑖𝑑𝑒 π‘œπ‘π‘π‘œπ‘ π‘–π‘‘π‘’ π‘‘π‘œ π‘Žπ‘›π‘”π‘™π‘’ πœƒ)/π»π‘¦π‘π‘œπ‘‘π‘’π‘›π‘’π‘ π‘’ cosβ‘πœƒ= (𝑠𝑖𝑑𝑒 π‘Žπ‘‘π‘—π‘Žπ‘π‘’π‘›π‘‘ π‘‘π‘œ π‘Žπ‘›π‘”π‘™π‘’ πœƒ)/π»π‘¦π‘π‘œπ‘‘π‘’π‘›π‘’π‘ π‘’ tanβ‘πœƒ= (𝑠𝑖𝑑𝑒 π‘œπ‘π‘π‘œπ‘ π‘–π‘‘π‘’ π‘‘π‘œ π‘Žπ‘›π‘”π‘™π‘’ πœƒ)/(𝑠𝑖𝑑𝑒 π‘Žπ‘‘π‘—π‘Žπ‘π‘’π‘›π‘‘ π‘‘π‘œ π‘Žπ‘›π‘”π‘™π‘’ πœƒ) coπ‘ π‘’π‘β‘πœƒ= 1/sinβ‘πœƒ π‘ π‘’π‘β‘πœƒ= 1/cosβ‘πœƒ cotβ‘πœƒ= 1/tanβ‘πœƒ

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.