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0. Review of College Algebra4h 43m
1. Measuring Angles39m
2. Trigonometric Functions on Right Triangles2h 5m
3. Unit Circle1h 19m
4. Graphing Trigonometric Functions1h 19m
5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
6. Trigonometric Identities and More Equations34m
7. Non-Right Triangles1h 38m
8. Vectors2h 25m
9. Polar Equations2h 5m
10. Parametric Equations1h 6m
11. Graphing Complex Numbers1h 7m

11. Graphing Complex Numbers

Polar Form of Complex Numbers

Trigonometry11. Graphing Complex NumbersPolar Form of Complex Numbers

Multiple Choice

Multiple Choice

Express the complex number $z = 7 + 11 i$ in polar form.

A

$z = \sqrt{170} (\cos 58 ° + i \sin 58 °)$

B

$\sqrt{170} (\cos 58 ° + \sin 58 °)$

C

$z = \sqrt{170} + i 58 °$

D

$z = 170 (\cos 58 ° + i \sin 58 °)$

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