SOLUTION: given traingle ABC with a=12 b=10 and c=8 find the angles in degrees and minutes. i would really appreciate any help that i can get. thanks
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-> SOLUTION: given traingle ABC with a=12 b=10 and c=8 find the angles in degrees and minutes. i would really appreciate any help that i can get. thanks
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Question 287226: given traingle ABC with a=12 b=10 and c=8 find the angles in degrees and minutes. i would really appreciate any help that i can get. thanks Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! given triangle ABC with a=12 b=10 and c=8 find the angles in degrees and minutes. i would really appreciate any help that i can get.
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Use the Law of Cosines:
Cos(A) = (b^2+c^2-a^2)/2bc
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cos(A) = (10^2+8^2-12^2)/(2*10*8)
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cos(A) = 0.125
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A = cos^-1(0.125) = 82.82 degrees
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Do the same for B.
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Then C = 180-(A+B)
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Cheers,
Stan H.
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