Ex 2.1, 2 - Find principal value of cos-1 (root 3/2) - Class 12

  1. Chapter 2 Class 12 Inverse Trigonometric Functions
  2. Serial order wise

Transcript

Ex 2.1, 2 Find the principal value of cos-1 (√3/2) Let y = cos-1 √3/2 cos y = √3/2 cos y = cos 𝝅/𝟔 ∴ y = 𝝅/𝟔 Since Range of cos-1 is [0, 𝜋] Hence, Principal Value is 𝝅/𝟔 (Since cos 𝜋/6 = √3/2)

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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.