Q)
(chatquestion)...normal to the ellipec
4x+9y = 36 at the point P(2, /5).
66 Find the equation of the line normal to the eilipse 16x
+ 25y2 = 400 at the point P(-3, 16/5).
%3D
%3D
67 Find the equation of the line normal to the ellipse (x²/a²)
+(y/b²)%3D1 which passes through the point P(x, Y1) on
the ellipse.
68 The tangent to an ellipse at a point Po meets the tangent at
a vertex in a point Q. Prove that the line joining the other
vertex to Po is parallel to the line joining the center to Q.
69 A square is inscribed in the ellipse whose equation is
(x²/16) + (y²/9) = 1. Find the coordinates 'of the vertices of
the square; find the perimeter and area of the square.
70 The orbit in which the Earth travels about the sun is
approximately an ellipse with the sun at one focus. The
major axis of the elliptical orbit is 300,000 kilometers and...(Anyone no. 68)
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