Lesson: The 𝑛th Roots of Unity Mathematics • Third Year of Secondary School

Students will be able to

• find the roots of unity and understand the derivation of the formula using de Moivre’s Theorem,
• plot the roots of unity on an Argand diagram and understand the geometric properties of this diagram,
• solve problems using the properties of the roots of unity,
• understand the relationship between and roots of unity where and share a factor,
• understand the definition of a primitive root of unity.