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 10, 12 practical exams 2025 for compartment students from July 10; detailed guidelines issued
CBSE Central Sector Scheme of Scholarship 2025 applications open on scholarships.gov.in
CBSE Board 2025: Class 10th, 12th supplementary date sheet out; exams from July 15
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