Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Trigonometry Inverse Trigonometric Functions
What is the value of \(\cos ^{-1}\left(\frac{-1}{\sqrt{2}}\right)+\operatorname{cosec}^{-1}(2)\) ?
1
\(\frac{3 \pi}{4}\)
2
\(\frac{11 \pi}{12}\)
3
\(\frac{5 \pi}{6}\)
4
More than one of the above
5
None of the above