1.

Let r and R be the inradius and the circumradius of a △ABC. Let θ be the angle between the line joining the incentre and the circumcentre of the △ABC and BC. Then θ is equal to

Answer»

Let r and R be the inradius and the circumradius of a ABC. Let θ be the angle between the line joining the incentre and the circumcentre of the ABC and BC. Then θ is equal to



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