# Worksheet: De Moivre's Theorem

In this worksheet, we will practice finding powers and roots of complex numbers and using de Moivre's theorem to simplify calculations of powers and roots.

**Q2: **

Use De Moivreβs theorem to find the two square roots of .

- A
- B
- C
- D
- E

**Q3: **

If , what is ?

- A
- B
- C
- D

**Q4: **

What is ?

- A2
- B
- C
- D
- E

**Q6: **

Use De Moivreβs theorem to find the two square roots of .

- A
- B
- C
- D
- E

**Q7: **

Use De Moivreβs theorem to find the two square roots of .

- A
- B
- C
- D
- E

**Q8: **

What is ?

- A2
- B
- C
- D16
- E