defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Trigonometry Inverse Trigonometric Functions
If sin–1 (x – 1) + cos–1 (x – 3) + tan–1 \(\left(\frac{x}{2-x^2}\right)\) = cos–1 k + π, then the value of k =
1
1
2
-1/\(\sqrt2\)
3
1/\(\sqrt2\)
4
None of these