1.

A riangle ABC is placed so that the mid-pointof the sides are on the x,y,z axes. Lengths oftheinterceptsmade by the planecontaining the triangleon these axes are respectively alpha, beta, gamma. Coordinatesof the centroidof the triangleABC are

Answer»

`(-alpha//3, beta//3, gamma//3)`
`(alpha//3, -beta//3, gamma//3)`
`(alpha//3, -gamma//3)`
`(alpha//3, beta//3, gamma//3)`

ANSWER :d


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