defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Trigonometry Inverse Trigonometric Functions
If \(a = \frac{2sinθ}{1 + cosθ + sinθ}\) then \(\frac{1+ \sin \theta - \cos \theta}{1+ \sin \theta}\) is
1
\(\frac{1}{a}\)
2
1 - a
3
a
4
1 + a