Same chapter3 marksDifficulty: Medium
Evaluate tan−1(1) + cos−1(1/2) + sin−1(1/2).
Inverse Trigonometric Functions
3 marksDifficulty: Medium
Write the principal value branch of tan−1x and of cot−1x.
Original Khojo Papers practice question — not from a past board paper.
Answer
The principal branch of tan−1x is (−π/2, π/2) and that of cot−1x is (0, π).
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The end points are excluded because the tangent and cotangent are undefined there.
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