# Is Pythagoras theorem valid on complex numbers?

Table of Contents

- 1 Is Pythagoras theorem valid on complex numbers?
- 2 What is the relationship between trigonometry and the Pythagorean theorem?
- 3 Is the Pythagorean theorem correct?
- 4 Is Pythagorean theorem considered trigonometry?
- 5 How do you find the complex trigonometric functions?
- 6 Do the rules of math apply to complex numbers?
- 7 Which complex trigonometric functions can be represented by power series?

## Is Pythagoras theorem valid on complex numbers?

No. The complex numbers are an extension field of the real numbers. There is of course the Argand diagram and geometry surrounding that (the absolute value of a complex number involves the Pythagorean theorem) but consider three dimensions.

## What is the relationship between trigonometry and the Pythagorean theorem?

Pythagoras is only to do with the sides of a right angled triangle. Trigonometry on the other hand can be used to calculate a missing side or a missing angle in a right angled triangle. If you are asked to find a side length then you will need to be given a side length and an angle (not including the right angle).

**How the Pythagorean theorem can be used in the real world?**

Real Life Application of the Pythagoras Theorem The Pythagorean Theorem is useful for two-dimensional navigation. You can use it and two lengths to find the shortest distance. … Painting on a Wall: Painters use ladders to paint on high buildings and often use the help of Pythagoras’ theorem to complete their work.

### Is the Pythagorean theorem correct?

It is not. It is a statement about the relationship between the lengths of the sides of a mathematical concept known as a right triangle. Science and applied math model actual things with these abstracted objects. And the Pythagorean theorem is a mathematical theorem, not a scientific hypothesis.

### Is Pythagorean theorem considered trigonometry?

Pythagoras Trig Identities are the trigonometric identities which actually the true representation of the Pythagoras Theorem as trigonometric functions. So, these identities help us to fundamentally decide the relationship between different sine, cosine, and tan trigonometric function.

**Is Pythagorean theorem geometry or trigonometry?**

Before embarking on trigonometry, there are a couple of things you need to know well about geometry, namely the Pythagorean theorem and similar triangles. Both of these are used over and over in trigonometry.

## How do you find the complex trigonometric functions?

The complex trigonometric functions can be represented by the power series: Sin(z) = Cos(z) = Other complex trigonometric functions are: tan(z) = cot(z) = sec(z) = csc(z) = Top

## Do the rules of math apply to complex numbers?

The familiar rules of math of real numbers may break down when applied to complex numbers. Free Lessons Lesson 1 Complex numbers

**What is the best book on complex numbers?**

Bombelli’s L’Algebra (1572) contained the first major treatise on complex numbers. Prior to this book, Cardano’s method could be used to find the roots of a cubic equation, but it would occasionally require taking the square root of a negative number as an intermediary step, even if the end result was a real number.

### Which complex trigonometric functions can be represented by power series?

The complex trigonometric functions can be represented by the power series: Sin(z)= Cos(z)= Other complex trigonometric functions are: tan(z)= cot(z)= sec(z)= csc(z)=