The angle between the lines represented by the equation $(x^{2} + y^{2}) s i n θ + 2 x y = 0$ is

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Solution

The correct option is C

$θ = t a n^{- 1} (\frac{2 \sqrt{1 - s i n^{2} θ}}{2 s i n θ}) = t a n^{- 1} (\frac{c o s θ}{s i n θ})$

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