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Questions  

If w 1 is a cube root of unity, then 1 , ω , ω2

a
are vertices of an equilateral triangle
b
lie on a straight line
c
lie on a circle of radius lie on a circle of radius 3/2
d
none of these

detailed solution

Correct option is A

|1−ω|=ω−ω2=ω2−1Alternatively plot the points on an argand diagram

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