Complex numbers|nth roots of unity

Nth root OF unity

To find the roots of any Complex Number, Cube roots of Unity

The number of 15th roots of unity which are also the 25th root of unity is: 3 (b) 5 (c) 10 (d) None of these

If alpha,beta are the complex cube roots of unity then alpha^(100)+beta^(100)+(1)/(alpha^(100)xx beta^(100))=

Square root| cube roots and nth roots of unity and nth roots of z

Problems based on cube roots and nth roots of unity and de Moivre's theorem

Problems based on Euler's form, To find roots of any Complex-Number, Cube - roots of unity.