anonymous
  • anonymous
Find sin
Trigonometry
chestercat
  • chestercat
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anonymous
  • anonymous
LynFran
  • 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)
LynFran
  • LynFran
|dw:1438493429840:dw|

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LynFran
  • LynFran
i just used the Pythagorean triple (3,4,5)
anonymous
  • anonymous
Do I multiply them?
LynFran
  • LynFran
to find sin
LynFran
  • 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.
LynFran
  • LynFran
|dw:1438530574828:dw|
LynFran
  • LynFran
let me proof those Pythagorean triples.. its for right angle triangle |dw:1438530705046:dw|
LynFran
  • LynFran
|dw:1438530890780:dw|
LynFran
  • LynFran
|dw:1438531092479:dw|
anonymous
  • anonymous
\[\sin \left(\tan ^{-1}\left(\frac{1}{12} \sqrt{4^2+3^2}\right)\right)=\frac{5}{13} \]
anonymous
  • anonymous
Sorry. First posting solve for L, not the sine of L.
anonymous
  • anonymous
Mathematica 9 was used for the calculations.
LynFran
  • LynFran
|dw:1438632938036:dw|
anonymous
  • anonymous
Congratulations, LynFran
LynFran
  • LynFran
Thanks

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