Ex 2.1, 6 - Find principal value of tan-1 (-1) - Chapter 2 Inverse - Ex 2.1

  1. Chapter 2 Class 12 Inverse Trigonometric Functions
  2. Serial order wise
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Ex 2.1, 6 Find the principal value of tan 1 ( 1) Let y = tan 1 ( 1) tan y = -1 tan y = tan ( /4) Range of principal value of tan 1 is ( /2, /2) Hence, the principal value of tan-1 (-1) is /4

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