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Inverse Trigonometric Functions
RS Aggarwal
CBSE
Grade 12
Question:
The principal value branch of $\sec^{-1} x$ is: (a) $[0, \pi] \setminus \{\pi/2\}$ (b) $[-\pi/2, \pi/2] \setminus \{0\}$ (c) $(0, \pi)$ (d) $(-\pi/2, \pi/2)$
Step-by-Step Solution
Key Concept: Standard principal branch of sec^{-1} x.
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Correct Answer:$[0, \pi] \setminus \{\pi/2\}$
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