state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Mathematics Trigonometry Inverse Trigonometric Functions
The principal value of sin−1\(\frac{1}{\sqrt{2}}\) is equal to which of the following?
1
\(\frac{\pi}{4}\)
2
\(\frac{3\pi}{4}\)
3
\(\frac{5\pi}{4}\)
4
none of these
5
Question Not Attempted