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Ex 3.2, 7 - Find value of cosec (-1410) - Chapter 3 Class 11 - Finding Value of trignometric functions, given angle

  1. Chapter 3 Class 11th Trigonometric Functions
  2. Serial order wise
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Transcript

Eπ‘₯3.2, 7 Find the value of the trigonometric function cosec (–1410Β°) cosec (–1410Β°) = – cosec (1410Β°) = – cosec (1410 Γ— πœ‹/180) = – cosec (47πœ‹/6) = – cosec (75/6 πœ‹) = – cosec (8Ο€ – 1/6 Ο€ ) = – cosec (– 1/6 Ο€ ) = – cosec (– 1/6 Γ— 180Β° ) = – cosec (–30Β°) = – (– cosec 30Β°) = cosec 30Β° = 1/sin⁑〖30Β°γ€— = 1/(( 1/2 ) ) = 2/1 = 2

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