1.

A(0,-1,-2), B(3,1,4) and C(5,7,1) are vertices of DeltaABD then find the measure of angleA.

Answer»


Answer :Centroid `(-(16)/(3) , 10)`, In centre `(-1, 8)` Circum centre `(-8,(63)/(2))`, In centre `(-1,8)` Circum centre `(-8,(63)/(2))`, ORTHO centre `(0,-33)`


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