Mathematics - Parabola Question with Solution | TestHub

Let P and Q be the end points of the latus rectum and $R\left(-5\cos 45^{\circ },-5\sin 45^{\circ }\right)$ be the vertex of the parabola. Circle $x^2+y^2-25=0$ is circumcircle of $△PQR$. If point $(\mathrm{a},\mathrm{b})$ is intersection point of tangents at the points P and Q to the parabola, then the value of $\left(a^2+b^2\right)$ is