Trig/Pre-Calculus

1. Trig/Pre-Calculus Today’s Lesson: 6.5b Complex Numbers in Trig Form You will: • Write complex numbers from trig form to standard form. • Find the product and quotient of complex numbers in trig form • Use DeMoivre’s Theorem to find powers of complex numbers

2. From Trig Form to Standard Form

3. From Trig Form to Standard Form

4. From Trig Form to Standard Form

5. Product and Quotient of Two Complex Numbers For Product Quotient

6. Find the product the complex numbers.

7. Find the product the complex numbers.

8. Find the quotient the complex numbers.

9. Find the quotient the complex numbers.

10. Evaluate completely.

11. DeMoivre’s Theorem Powers of Complex Numbers For

12. Use DeMoivre’s Theorem to find DeMoivre’s Theorem

13. Use DeMoivre’s Theorem to find Write in trig form (rcis ) QII DeMoivre’s Theorem 4

14. Use DeMoivre’s Theorem to find Write in trig form (rcis ) QI DeMoivre’s Theorem 3 2

15. Use DeMoivre’s Theorem to find Write in trig form (rcis ) QII DeMoivre’s Theorem 2

16. HW: p440 #33-39 odds, 51-61 odds, 73-83 odds [Honors: 64,66,70,72]

19. [Honors: 64,66,70,72]

20. [Honors: 64,66,70,72]