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Videos, examples, solutions, worksheets, and activities to help PreCalculus students learn how to convert complex numbers between trigonometric or polar form and rectangular form.

Converting Complex Numbers from Trigonometric Form to Rectangular:

Both the trigonometric form and the rectangular form are useful ways to describe complex numbers, and so it is important to understand converting complex numbers from trigonometric form to rectangular. The method for converting complex numbers from trigonometric form to rectangular is the reverse of converting from rectangular to trigonometric form.

**How to convert a complex number from trigonometric form to rectangular form?**
**Complex Numbers: Convert From Polar to Complex Form**

In this video, we take a number in polar form and write it in complex form.**Converting Complex Numbers From Rectangular Form to Trigonometric**

Both the trigonometric form and the rectangular form are useful ways to describe complex numbers, and so we must understand how to convert from rectangular form to trigonometric form. To convert from rectangular form to trigonometric form we need to calculate the modulus and the angle of the position vector. It is also important to be able to convert from trigonometric to rectangular form.

** How to convert a complex number from rectangular form to trigonometric form?**

**Expressing a Complex Number in Trigonometric or Polar Form, Ex 1. **

This video lesson shows how to write a complex number in polar form.**Expressing a Complex Number in Trigonometric or Polar Form, Ex 2.**

Just another example of writing a complex number in 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.

More Lessons for PreCalculus

Math Worksheets

Converting Complex Numbers from Trigonometric Form to Rectangular:

Both the trigonometric form and the rectangular form are useful ways to describe complex numbers, and so it is important to understand converting complex numbers from trigonometric form to rectangular. The method for converting complex numbers from trigonometric form to rectangular is the reverse of converting from rectangular to trigonometric form.

In this video, we take a number in polar form and write it in complex form.

Both the trigonometric form and the rectangular form are useful ways to describe complex numbers, and so we must understand how to convert from rectangular form to trigonometric form. To convert from rectangular form to trigonometric form we need to calculate the modulus and the angle of the position vector. It is also important to be able to convert from trigonometric to rectangular form.

This video lesson shows how to write a complex number in polar form.

Just another example of writing a complex number in polar 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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