If cosec θ + cot θ = 5, then cosec θ is equal to _________.
Answer & explanation
Correct answer: option 3
cosec θ + cot θ = 5 ----(1)
{ we know, cosec² θ - cot² θ = 1 }
cosec θ - cot θ = \(\frac{1}{5}\) -----(2)
On adding equation 1 and 2.
2 cosec θ = 5 + \(\frac{1}{5}\)
cosec θ = \(\frac{1}{2}\) [ 5 + \(\frac{1}{5}\) ]