1.

The tangent and normal to the ellipse x^(2)+4y^(2)=4 at a point P(theta) on it meets the major axis in Q and R respectively.If theta lt theta lt (pi)/(2) and QR=2 then show thattheta=cos^(-1)((2)/(3)).

Answer»


Answer :`rArr theta=COS^(-1)((2)/(3)) or PI- cos^(-1)((2)/(3))`


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