Example 9 -  Find value of cos (-1710) - Chapter 3 Class 11 - Examples

  1. Chapter 3 Class 11 Trigonometric Functions
  2. Concept wise

Transcript

E ample, 9 Find the value of cos ( 1710 ). cos ( 1710 ) = cos (1710 ) = cos (1710 /180) = cos (19 /2) = cos (9 1/2 ) = cos (10 /2) = cos ( /2) = cos ( 180/2) = cos ( 90 ) = cos 90 = 0

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