1. Chapter 3 Class 11 Trigonometric Functions
  2. Concept wise
  3. Finding Value of trignometric functions, given other functions
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Basic Trigonometry – A Quick Recap

Last updated at Dec. 16, 2024 by Teachoo

Sin, cos, tan

 

Value of sin, cos, tan at different angles

 

Basic Identities

cos 2  θ + sin 2  θ = 1

1 + tan 2  θ = sec 2  θ

1 + cot 2  θ = cosec 2  θ

Transcript

In right triangle ABC sin⁡𝜃= (𝑠𝑖𝑑𝑒 𝑜𝑝𝑝𝑜𝑠𝑖𝑡𝑒 𝑡𝑜 𝑎𝑛𝑔𝑙𝑒 𝜃)/𝐻𝑦𝑝𝑜𝑡𝑒𝑛𝑢𝑠𝑒 cos⁡𝜃= (𝑠𝑖𝑑𝑒 𝑎𝑑𝑗𝑎𝑐𝑒𝑛𝑡 𝑡𝑜 𝑎𝑛𝑔𝑙𝑒 𝜃)/𝐻𝑦𝑝𝑜𝑡𝑒𝑛𝑢𝑠𝑒 tan⁡𝜃= (𝑠𝑖𝑑𝑒 𝑜𝑝𝑝𝑜𝑠𝑖𝑡𝑒 𝑡𝑜 𝑎𝑛𝑔𝑙𝑒 𝜃)/(𝑠𝑖𝑑𝑒 𝑎𝑑𝑗𝑎𝑐𝑒𝑛𝑡 𝑡𝑜 𝑎𝑛𝑔𝑙𝑒 𝜃) co𝑠𝑒𝑐⁡𝜃= 1/sin⁡𝜃 𝑠𝑒𝑐⁡𝜃= 1/cos⁡𝜃 cot⁡𝜃= 1/tan⁡𝜃
  1. Chapter 3 Class 11 Trigonometric Functions
  2. Concept wise

    3. Finding Value of trignometric functions, given other functions

    Finding Value of trignometric functions, given angle →
Finding Value of trignometric functions, given angle →
Chapter 3 Class 11 Trigonometric Functions
Concept wise

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo