Mathematics

Mathematics

Problem

What is the principal value range of the inverse cosine function y=arccos⁡xy = \arccos x? a) [0,π2][0,\tfrac{\pi}{2}] b) [0,π][0,\pi] c) (0,π)(0,\pi) d) [−π2,π2][-\tfrac{\pi}{2},\tfrac{\pi}{2}]

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