Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 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
\(\frac{12 \pi}{13}\)