# Largest Angle

Geometry Level pending

Let $$P$$ be point $$(0,3)$$, $$Q$$ be $$(0,5)$$ & $$R$$ be $$(x,0)$$. If magnitude of angle $$PRQ$$ is as large as possible, then the value of $$x^2$$ [given that $$(x,0)$$ is on $$x$$-axis] is:

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