Solution
Expression : $$\frac{1}{\sqrt{(Cosec^{2}A-1)}}=x$$
Using $$(cosec^2 A - cot^2 A = 1)$$
= $$\frac{1}{\sqrt{cot^2 A}}$$
= $$\frac{1}{cot A} = tan A$$
=> Ans - (B)
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