If cosec θ - cot θ = \(\frac{9}{4}\), then value of cosecθ = ?
Answer & explanation
Correct answer: option 3
If cosec θ - cot θ = \(x\), then cosec θ + cot θ = \(\frac{1}{x}\)
ATQ,
⇒ cosec θ - cot θ = \(\frac{9}{4}\) ..........(i)
⇒ cosec θ + cot θ = \(\frac{4}{9}\) ..........(ii)
(i) + (ii)
⇒ 2 cosec θ = \(\frac{9}{4}\) + \(\frac{4}{9}\) = \(\frac{81+ 16}{36}\) = \(\frac{97}{36}\)
⇒ cosec θ= \(\frac{97}{36}\)