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Question

What is the value of cos-1(-x) for all x belongs to [-1, 1]?

Options :

  1. cos⁻¹(-x)

  2. π – cos⁻¹(x)

  3. π – cos⁻¹(-x)

  4. π + cos⁻¹(x)

Show Answer

Answer :

π – cos⁻¹(x)

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