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If tan-1(x) + tan-1y + tan-1z = π/2 and (x - y)2 + (y - z)2 + (z - x)2 = 0, then x2 + y2 + z2 equals

(A) 0

(B) 4

(C) 1

(D) None of these

1 Answer

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Best answer

Correct option (C) 1

Explanation:

 

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