Published by:
CGP EDU Academic Team
Published on: August 11, 2026
The set of all values of k for which (tan -1 x) 3 + (cot -1 x) 3 = 
, is the interval:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Let S = (tan -1 x) 3 + (cot -1 x) 3
=(tan -1 x + cot -1 x)-3tan -1 x.cot -1 x (tan -1 x + cot -1 x)
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