Teaching EMRS PGT Mock Test 2023 Mathematics Trigonometry Inverse Trigonometric Functions

Evaluate \(\rm2\tan^{-1}{1\over3}+2\cot^{-1}{2\over3}\)

1
\(\rm\tan^{-1}{3\over11}\)
2
\(\rm2\cot^{-1}{3\over11}\)
3
\(\rm2\tan^{-1}{3\over11}\)
4
\(\rm\cot^{-1}{3\over11}\)
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