1. Chapter 2 Class 12 Inverse Trigonometric Functions
  2. Serial order wise
  3. Ex 2.1

Ex 2.1, 9 - Chapter 2 Class 12 Inverse Trigonometric Functions

Last updated at Dec. 8, 2016 by

Ex 2.1, 9 - Find principal value of cos-1 (-1/root 2) - Finding pricipal value

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

    3. Ex 2.1

    Ex 2.2 →

Transcript

Ex 2.1, 9 Find the principal value of cos-1 ( 1/ 2) Let y = cos-1 ( 1/ 2) cos y = ( 1)/ 2 cos y = cos (3 /4) Range of principal value of cos-1 is between [0 , ] Hence the principal value is 3 /4

Chapter 2 Class 12 Inverse Trigonometric Functions
Serial order wise

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