The angle through which the coordinate axes are to be rotated to remove the $x y$ term in the equation…

The angle through which the coordinate axes are to be rotated to remove the $x y$ term in the equation $x^2+2 x y-y^2=0$ is
  1. $\frac{\pi}{4}$
  2. $\frac{\pi}{3}$
  3. $\frac{\pi}{8}$
  4. $\frac{\pi}{6}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (25 Apr Shift 2)

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