## anonymous one year ago Find sin <L

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1. anonymous

2. LynFran

|dw:1438493128287:dw|i must ask do u know the Pythagorean triples; these would make ur work easier (3,4,5) (5,12,13) (7,24,25)

3. LynFran

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4. LynFran

i just used the Pythagorean triple (3,4,5)

5. anonymous

Do I multiply them?

6. LynFran

to find sin<L|dw:1438493560432:dw|

7. LynFran

i just used the Pythagorean triple (5,12,13) no it tells u the side the right angle triangle ...the hyp is the largest # in the pyth trip.

8. LynFran

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9. LynFran

let me proof those Pythagorean triples.. its for right angle triangle |dw:1438530705046:dw|

10. LynFran

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11. LynFran

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12. anonymous

$\sin \left(\tan ^{-1}\left(\frac{1}{12} \sqrt{4^2+3^2}\right)\right)=\frac{5}{13}$

13. anonymous

Sorry. First posting solve for L, not the sine of L.

14. anonymous

Mathematica 9 was used for the calculations.

15. LynFran

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16. anonymous

Congratulations, LynFran

17. LynFran

Thanks