defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Trigonometry Inverse Trigonometric Functions
If α ≤ 2 sin–1x + cos–1x ≤ β, then
1
α = \(\frac{−\pi}{2}\), β = \(\frac{\pi}{2}\)
2
α = 0, β = π
3
α = \(\frac{−\pi}{2}\), β = \(\frac{3 \pi}{2}\)
4
α = 0, β = 2π