Ex 2.1, 10 - Find principal value of cosec-1 (- root 2) - Ex 2.1

  1. Chapter 2 Class 12 Inverse Trigonometric Functions
  2. Serial order wise
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Ex 2.1, 10 Find the principal value of cosec-1 ( 2) Let y = cosec-1 ( 2) cosec y = 2 cosec y = cosec (( )/4) Range of principal value of cosec 1 is [ /2, /2] - {0} Hence, principal value of cosec-1 (- 2) is /4

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