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CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Q31 Marksprincipal_ranges

CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Question 3 (Inverse Trigonometric Functions)

Which inverse trigonometric function has an incorrectly listed principal range?

(A) arctan: (−π/2,π/2)
(B) arcsec: [0,π] excluding π/2
(C) arccot: (0,π)
(D) arccsc: [−π/2,π/2]

✅ Step-by-Step Solution

Final Answer: arccsc: [−π/2,π/2]

For arccsc the principal range excludes zero because cosecant is undefined there.

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