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# Can someone explain why I'm wrong. watch

1. https://gyazo.com/66b9dbe47972c11a677233e0a23137a3

https://scontent-lhr3-1.xx.fbcdn.net...f0&oe=5630445C

I don't understand why I got it wrong, do I have the wrong approach?

2. (Original post by Louisb19)
https://gyazo.com/66b9dbe47972c11a677233e0a23137a3

https://scontent-lhr3-1.xx.fbcdn.net...f0&oe=5630445C

I don't understand why I got it wrong, do I have the wrong approach?

The other angle of the triangle (the one I assume you are looking at when you say x = sin ...) is , not .
3. (Original post by Louisb19)
https://gyazo.com/66b9dbe47972c11a677233e0a23137a3

https://scontent-lhr3-1.xx.fbcdn.net...f0&oe=5630445C

I don't understand why I got it wrong, do I have the wrong approach?

You have them the wrong way round.
4. (Original post by ghostwalker)

You have them the wrong way round.
Yeah you are right, what am I even doing.

Thanks!
5. (Original post by Louisb19)
https://gyazo.com/66b9dbe47972c11a677233e0a23137a3

https://scontent-lhr3-1.xx.fbcdn.net...f0&oe=5630445C

I don't understand why I got it wrong, do I have the wrong approach?

it is just similar triangles and proportions (your diagram is good (minus trigonometry)

I got (a) by

x = 1 + 3/5 * 4
y = 1 +3/5 * 3

too late ...
out I go
6. (Original post by TeeEm)

it is just similar triangles and proportions (your diagram is good (minus trigonometry)

I got (a) by

x = 1 + 3/5 * 4
y = 1 +3/5 * 3
Yeah I have got it now, I had x = sin(theta) when it should have been cos. and the y part was wrong.

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Updated: October 26, 2015
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