# Subtracting complex in polar

Given w =√2(cosine (pi/4) + i sine (pi/4) ) and z = 2 (cosine (pi/2) + i sine (pi/2) ).

What is w - z expressed in polar form?

What is w - z expressed in polar form?

### Correct answer:

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**Dr Math**

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Tips for related online calculators

Try our complex numbers calculator.

See also our trigonometric triangle calculator.

Try conversion angle units angle degrees, minutes, seconds, radians, grads.

See also our trigonometric triangle calculator.

Try conversion angle units angle degrees, minutes, seconds, radians, grads.

#### You need to know the following knowledge to solve this word math problem:

**arithmetic**- square root
- subtraction
**planimetrics**- triangle
**numbers**- complex numbers
**goniometry and trigonometry**- sine
- cosine
- tangent
- arctangent

#### Units of physical quantities:

#### Grade of the word problem:

We encourage you to watch this tutorial video on this math problem: video1

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