20. is equal to
(A)
(B)
(C)
(D)
Solving the inner bracket of ;
or
Take then,
and we know the range of principal value of
Therefore we have .
Hence,
Hence the correct answer is D.
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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