Simple, isn't it?

Consider a sphere of radius \(R\). What is the minimum angle at which a particle can be projected from the top of the sphere, with minimum velocity, such that it just clears the sphere. i.e., It completes its projectile with small clearance from the sphere.

The answer is: \({ x }^{ \circ }\)

Find \(x\).

Credits ATRI DUTTA

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