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Co - ordinate Geometry 3D Geometry

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If the centroid of triangle whose vertices are (a,1, 3), (– 2, b, –5) and (4, 7, c) be the origin, then the values of a, b, c are

A. – 2, –8, –2

B. 2, 8, –2

C. –2, –8, 2

D. 7, –1, 0

E. None of the above

View Answer

Correct choice: C

Explanation:

0 = a-2+4/3 ⇒ a = -2, 0 = 1+b+7/3 ⇒ b = -8
And 0 = 3-5+c/3 ⇒ c = 2.

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Eamcet Mathematics Co - ordinate Geometry 3D Geometry

Eamcet Mathematics
Co - ordinate Geometry 3D Geometry