- #1

- 3

- 0

Many thanks

Alex

## Homework Statement

alpha

A = constant

## Homework Equations

Solve for [sin(alpha)]^2

A^2- [sin(alpha)]^2*(A^2+2)+2*[sin(alpha)]^4

## The Attempt at a Solution

The solution is given as

[sin(alpha)]^2 = (A^2)/2 or 1

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- Thread starter alexolcz
- Start date

- #1

- 3

- 0

Many thanks

Alex

alpha

A = constant

Solve for [sin(alpha)]^2

A^2- [sin(alpha)]^2*(A^2+2)+2*[sin(alpha)]^4

The solution is given as

[sin(alpha)]^2 = (A^2)/2 or 1

- #2

tiny-tim

Science Advisor

Homework Helper

- 25,836

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Hi Alex! Welcome to PF!

(try using the X

So you mean solve A

- #3

- 3

- 0

Thanks for your fast reply, sorry about the formatting i'm new to all this!

Yes that the question. I realise that it is basically a simple quadratic but when i try to solve it using to the quadratic formula I don't end up with the required results?

Thanks again

Alex

- #4

berkeman

Mentor

- 60,544

- 10,858

Thanks for your fast reply, sorry about the formatting i'm new to all this!

Yes that the question. I realise that it is basically a simple quadratic but when i try to solve it using to the quadratic formula I don't end up with the required results?

Thanks again

Alex

Please post your work, so we can see where you are going wrong...

- #5

- 3

- 0

Hi,

I've just manage to solve it! Thanks for your offers of help, very kind.

Merry Christmas

Alex

I've just manage to solve it! Thanks for your offers of help, very kind.

Merry Christmas

Alex

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