If 2x = secA and is (\frac{2}{x}) = tanA, then find the value of 2(x^{2}−\frac{1}{x^{2}}) = .

RRB Group D 10-Oct-2018 Shift 3 Solved Paper

Question : 20 of 100

Marks: +1, -0

If 2x = secA and is

(\;{2}/{x}) = tanA

, then find the value of

2(x^{2}−\;{1}/{x^{2}})

= .

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