Teaching EMRS PGT Mock Test 2023 Mathematics Trigonometry Inverse Trigonometric Functions

\(\left( {2\,\,{{\tan }^{ - 1}}\frac{1}{3} + {{\tan }^{ - 1}}\frac{1}{7}} \right)\) equals:

1
\(\frac{π}{3}\)
2
\(\frac{π}{4}\)
3
\(\frac{π}{6}\)
4
\(\frac{2π}{3}\)
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