Question

which of the following is equal to the sum of three angle of a triangle
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Answer 1

Answer:

7.Find the value of (x + y + z) , if (x - 3) ^ 2 + (y - 4) ^ 2 + (z - 5) ^ 2 = 0 and x, y, z are real numbers. (a) -12 (c) 8 (b) 0 (d) 12