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Why does sin^2(x)+cos^2(x)=1?

We can understand this identity in two different, useful ways.

Firstly, we can use Euler's identities from trigonometry to obtain the desired result using straightforward algebra. We know that:

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AM
Answered by Alex M. Maths tutor
3510 Views

What is the differences between mitosis and meiosis?

Mitosis and meiosis are both processes which describe the production of new cells. Mitosis produces 2 daughter cells which are genetically identical to the parent cell. Each daughter cell is ...

JT
Answered by Jennifer T. Biology tutor
445405 Views

How can I describe a sentence?

Declaritive - to declare something Imperative - to demand Interrogative - to question, indicated via a question mark '?' Exclamative - to exclaim, indicated via an exclaimation mark '!' Rhetorical questio...

KC
Answered by Kelly C. English tutor
2806 Views

Why is a percentage yield never 100%?

There are a few reasons why percentage yield will never be 100%. This could be because other, unexpected reactions occur which don't produce the desired product, not all of the reactants are used in the r...

AB
Answered by Alex B. Chemistry tutor
51988 Views

How do double bonds form?

Double bonds consist of two types of bond, a pi bond and a sigma bond. The sigma bond is a single bond, and is formed by the overlap of two s-orbitals. The pi bond is formed by the sideways overlap of non...

AB
Answered by Alex B. Chemistry tutor
4270 Views

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