If the sides of a triangle are: a = 2, b = 3 and c = 5, what is angle A.

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Before an attempt is made to determine the value of A, look at the length of the sides given. The sum of a and b is equal to that of c. In a triangle, the sum of the length of any two sides should be greater than that of the third side.

**As this is not the case here, the given lengths do not define a triangle.**

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