anonymous
  • anonymous
solve the triangle a=13,b=7,c=15
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Define 'solve'
anonymous
  • anonymous
Yea, what do you need to do?
anonymous
  • anonymous
i think they want the angles on the inside

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anonymous
  • anonymous
Cosine rule.
anonymous
  • anonymous
how do i use it if theres no given angle
anonymous
  • anonymous
You use the cosine rule to find the angle...
anonymous
  • anonymous
ohh ok i see it my bad lol
anonymous
  • anonymous
Note the largest angle will be opposite the longest side.
anonymous
  • anonymous
Law of cosines..15^2=(7^2)+(13^2)-(2*7*13cos(a))....solve for a and that gives you the angle corresponding the the side 15. Then you can either do that for the other side as well of use the law of sines to find the another angle. Once you find a second angle. you can use the fact that the interior angles in a triangle sum to 180 degrees to find the third.
anonymous
  • anonymous
Hey linalg, are you good with linear algebra, guessin by your username?
anonymous
  • anonymous
thanks guys youve help me out big time!! :)
anonymous
  • anonymous
meganchiu..I'm ok with linear. That's the name I created when I first made an account because I had a question involving linear algebra; I was taking that class then..rocc0, you're welcome.

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