Class 12 Exam  >  Class 12 Questions  >  The principal value ofa)3π/4b)π/4c)π... Start Learning for Free
The principal value of 
  • a)
    3π/4
  • b)
    π/4
  • c)
    π/2
  • d)
    π/6
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The principal value ofa)3π/4b)π/4c)π/2d)π/6Correct answer ...
The principal value of  means that we need to find an angle in the principal branch of the function where the cosine function is equal to √3/2 . Hence the required value
is π/6
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