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# Trigonometry help watch

1. How do I answer this question?
2. There's no question.
3. (Original post by an_atheist)
There's no question.
Here it is you was to quick! 🙂

4. (Original post by JackT2000)
Here it is you was to quick! 🙂

What's the question?
5. (Original post by NotNotBatman)
What's the question?
The triangle on the left
6. (Original post by JackT2000)
The triangle on the left
7. You need to find the Adjacent length?

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8. (Original post by Trevish)
You need to find the Adjacent length?

Posted from TSR Mobile
Yes
9. you can use Pythagoras' Theorem to find the third side ?

10. (Original post by JackT2000)
Yes
It's a right angled triangle, use a^2+b^2=c^2 from pythagoras. or use the cosine rule.
11. (Original post by the bear)
you can use Pythagoras' Theorem to find the third side ?

True never thought of that so it would be A^2 + 41.9^2 = 65.3^2

I would then do 65.3^2 - 41.9^2 and then finally square root the sum of 65.3^2 - 41.9^2 ???
12. (Original post by JackT2000)
True never thought of that so it would be A^2 + 41.9^2 = 65.3^2

I would then do 65.3^2 - 41.9^2 and then finally square root the sum of 65.3^2 - 41.9^2 ???
http://s2.quickmeme.com/img/40/40b96...30963ed6c7.jpg

13. Lol so is a = 50.1cm ??
14. (Original post by JackT2000)
Lol so is a = 50.1cm ??
that looks OK

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