Answer :

We know that if the slope of two tangent of a curve are satisfies a relation m1m2 = -1, then tangents are at right angles


m1 at (2, 0) = -1


m2 at (3, 0) = 1


m1m2 = (-1)(1) = -1


So, we can say that tangent at (2, 0) and (3, 0) are at right angles.


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