If the tangent to the ellipse x2+4y2=16 at P(θ) is normal to circle x – InterviewSolution

1.	If the tangent to the ellipse x2+4y2=16 at P(θ) is normal to circle x2+y2−8x−4y=0. Then θ equals to
Answer» If the tangent to the ellipse $x^{2} + 4 y^{2} = 16$ at $P (θ)$ is normal to circle $x^{2} + y^{2} - 8 x - 4 y = 0$ . Then $θ$ equals to

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