Given that A→+B→+C→=0 out of three vectors two are equal in magnitude and the magnitude of third vector is 2 times that of either of the two having equal magnitude. Then the angles between vectors are given by

From polygon law, three vectors having summation zero should form a closed polygon (Triangle). Since the two vectors are having same magnitude and the third vector is 2 times that of either of two having equal magnitude. That is, the triangle should be right angled triangle.Angle between A and B, α=90∘Angle between B and C, β=135∘Angle between A and C, γ=135∘