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+1 vote
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the area of the triangle whose vertices are i, alpha, beta, where i= root -1 and alpha , beta are the non real cube roots of unity is

1 Answer

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Best answer

The vertices of the triangle formed by the cube roots of unity = 1 , ω, ω² .

the vertices in the complex plane are described by :

1 = (1, 0)        ω = (-1/2 , √3/2 )   ω² = ( -1/2 , -√3/2)

The side of this equilateral  triangle is = √3

Altitude of the triangle is =  √3/2 * √3 = 3/2

So area of triangle = 1/2 * 3/2 * √3  = 3√3 / 4 

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