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The principal value of cos–1 (cos 5) is
  • a)
    5
  • b)
    π – 5
  • c)
    5-π 
  • d)
    2π-5
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The principal value of cos–1(cos 5) isa)5b)π– 5c)5-π...
cos−1(cos5)
=2π−5 
as 2π−5 ϵ [0,π]
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Community Answer
The principal value of cos–1(cos 5) isa)5b)π– 5c)5-π...
Explanation:

Principal Value of cos-1(cos 5):
- The principal value of cos-1(cos x) is x for x ∈ [0, π].
- In this case, we are given cos-1(cos 5).
- Since 5 ∈ [0, π], the principal value of cos-1(cos 5) is 5.
Therefore, the correct answer is option 'D) 2π - 5'.
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The principal value of cos–1(cos 5) isa)5b)π– 5c)5-πd)2π-5Correct answer is option 'D'. Can you explain this answer?
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