જો \(\frac{sin\, \theta-cos\, \theta}{sin\, \theta+cos\, \theta}=\frac{4}{5}\), તો \(\frac{cosec^2\theta}{2-cosec^2\theta}\) ની કિંમત છે:
1
\(\frac{40}{41}\)
2
\(\frac{41}{40}\)
3
\(\frac{31}{30}\)
4
\(\frac{sin\, θ-cos\, θ}{sin\, θ+cos\, θ}=\frac{4}{5}\)