Teaching Bihar Sakshamta Pariksha (Niyojit Shikshak) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If cosec θ = 2x and cot θ = \(\rm \frac{2}{x}\) then \(\rm 2\left(x^2-\frac{1}{x^2}\right)=?\)
1
\(-\frac{1}{2}\)
2
1
3
-1
4
\(\frac{1}{2}\)