Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Mathematics Trigonometry Trigonometric Identities
If secθ - tanθ = 3, where -90∘ < θ < 0∘, then find the value of the expression \(\frac{\text {cosec} \theta - 1}{\text {cosec} \theta + 1}\).
1
\(\frac{1}{9}\)
2
9
3
\(\frac{1}{3}\)
4
More than one of the above
5
None of the above