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Focii of Ellipse

The angle of ...

Question

The angle of rotation of axes in order to eliminate $x y$ term in the equation $x y = c^{2}$ is

\frac{π}{12}

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\frac{π}{6}

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\frac{π}{3}

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\frac{π}{4}

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Solution

The correct option is D $\frac{π}{4}$
The axymtrot get transformed into g=x,y=-x from x=0,y=0
$∴$ Angle of rotation will be $45^{0}$

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