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Assertion (A) If the tangent and normal ...

Assertion (A) If the tangent and normal to the ellipse `9x^(2)+16y^(2)=144` at the point `P(pi/3)` on it meet the major axis in Q and R respectively, then `QR=(57)/(8)`.
Reason (R) If the tangent and normal to the ellipse `(x^(2))/(a^(2))+(y^(2))/(b^(2))=` at the point `P(theta)` on it meet the major axis in Q and R respectively, then `QR=|(a^(2)sin^(2)theta-b^(2)cos^(2)theta)/(a cos theta)|`
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