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Common Core (The Complex Number System)

Common Core for Mathematics

### Suggested Learning Targets

The following diagram shows how to convert complex numbers from rectangular form to polar (trigonometric) form. Scroll down the page for more examples and solutions.

### The Complex Plane

Complex Numbers - The Complex Plane

Represent a complex number in the complex plane.

The complex plane, complex numbers in standard form, the difference between complex numbers and imaginary numbers, and plotting complex numbers in the complex plane.**The Polar Form of Complex Numbers**

The complex plane; converting complex numbers between rectangular form and polar (trigonometric) form; the product and quotient formulas for complex numbers written in polar form.

### From Rectangular to Polar Form

Expressing a Complex Number in Trigonometric or Polar Form, Ex 1.
**Expressing a Complex Number in Trigonometric or Polar Form, Ex 2**
**Expressing a Complex Number in Trigonometric or Polar Form, Ex 3**
### From Polar to Rectangular Form

Complex Number in Rectangular Form

Step by step instruction in converting a complex number from its polar form to its rectangular equivalent.**Complex Numbers: Convert From Polar to Complex Form (Rectangular Form), Ex 1**

We take a number in polar form and write it in complex form.**The Complex Plane and Polar Form**

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

Common Core (The Complex Number System)

Common Core for Mathematics

Examples, solutions, and lessons to help High School students learn how to represent complex numbers on the complex plane in rectangular and polar form (including real and imaginary numbers), and explain why the rectangular and polar forms of a given complex number represent the same number.

- I can represent a complex number in a complex plane.
- I can convert a complex number from rectangular (standard) form to polar (trigonometric) form.
- I can convert a complex number from polar form to rectangular form.

The following diagram shows how to convert complex numbers from rectangular form to polar (trigonometric) form. Scroll down the page for more examples and solutions.

Represent a complex number in the complex plane.

The complex plane, complex numbers in standard form, the difference between complex numbers and imaginary numbers, and plotting complex numbers in the complex plane.

The complex plane; converting complex numbers between rectangular form and polar (trigonometric) form; the product and quotient formulas for complex numbers written in polar form.

Step by step instruction in converting a complex number from its polar form to its rectangular equivalent.

We take a number in polar form and write it in complex form.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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