[" 11.If the normal at the point "P(theta)" to the ellipse "5x^(2)+14y^(2)=70],[" intersects it again at the point "Q(2 theta)" ,then "cos theta=],[[" (a) "4/3," (b) "-2/3," (c) "1/3," (d) "-1/3]]

If the normal at the point p(theta) to the ellipse 5x^(2)+14y^(2)=70 intersects in again the point Q (2 theta) , then show that, cos theta=(2)/(3)

If the normal at the point P( theta) to the ellipse (x^(2))/(14)+(y^(2))/(5)=1 intersects it again at the point Q (2 , theta) then cos theta is equal to

The normal at a poitn P( theta) on the ellipse 5x^(2) +14y^(2) =70 cuts the curve again at a point Q (2theta) then "cos" theta

The normal at a point P(theta) on the ellipse 5x^(2)+14y^(2)=70 cuts the curve again at a point Q(2 theta) then cos thetahat I

If the normal at the point P(theta) to the ellipse x^2/14+y^2/5=1 intersects it again at the point Q(2theta), then Costheta is equal to (A) 2/3 (B) (-2)/3 (C) 3/4 (D) non of these

If the normal at the point P(theta) to the ellipse x^2/14+y^2/5=1 intersects it again at the point Q(2theta), then Costheta is equal to (A) 2/3 (B) (-2)/3 (C) 3/4 (D) non of these

If the normal at the point P(theta) to the ellipse (x^(2))/(14)+(y^(2))/(5)=1 intersects it again at the point Q(2 theta), then cos theta is equal to (A)(2)/(3)(B)(-2)/(3) (C) (3)/(4) (D) non of these

If the normal at theta on (x^(2))/(a^(2))+(y^(2))/(b^(2))=1,(a>b) intersects the curve again at phi then