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anonymous
 one year ago
What would I use to solve the following?
Given triangle ABC with b = 17, c = 26, and m<A=124 degrees, find a. Round the cosine value to the nearest thousandth and answer to the nearest hundredth.
I understand the law of Sines and law of cosines, but since this doesn't have an angle with an opposite side given, I'm a bit thrown. I know there is a tan(BC) etc formula fos SAS; but I can't figure it out.
Thank you
anonymous
 one year ago
What would I use to solve the following? Given triangle ABC with b = 17, c = 26, and m<A=124 degrees, find a. Round the cosine value to the nearest thousandth and answer to the nearest hundredth. I understand the law of Sines and law of cosines, but since this doesn't have an angle with an opposite side given, I'm a bit thrown. I know there is a tan(BC) etc formula fos SAS; but I can't figure it out. Thank you

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It would look like this dw:1437017410485:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0got it :) a^2=b^2+c^2(2)(b)(c) cos(A)
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