Question 753300: I need help. Can not get to answer the following :
1- Find the measure of angle C in abc triangle to the nearest degree if A = 33 degrees, b =12 and c =7
2 -Find the length of side c in ABC triangle to the nearest tenth if a =14, b =13, and C = 45 degrees
3- Find the length of side b in ABC triangle to the nearest tenth if a =20, b = 50 degrees, and c =32.
4- Find the measure of angle A in ABC triangle to the nearest degree if a =20, b=17, and c =32.
5 -Find the length of side c in ABC triangle to the nearest tenth if a =15, b =12 and C =63 degrees.
thank you very much for your help. Math is not my strong side.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1- Find the measure of angle C in abc triangle to the nearest degree if A = 33 degrees, b =12 and c =7
Find "a" using a^2 = b^2+c^2-2bcCos(A)
Then find C using Cos(C) = [a^2+b^2-c^2]/(2ab)
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2 -Find the length of side c in ABC triangle to the nearest tenth if a =14, b =13, and C = 45 degrees
c\^2 = a^2 + b^2-2ab*Cos(C)
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3- Find the length of side b in ABC triangle to the nearest tenth if a =20, b = 50 degrees, and c =32.
b^2 = a^2+c^2-2ac*Cos(B)
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4- Find the measure of angle A in ABC triangle to the nearest degree if a =20, b=17, and c =32.
Cos(A) = [b^2+c^2-a^2]/(2bc)
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5 -Find the length of side c in ABC triangle to the nearest tenth if a =15, b =12 and C =63 degrees.
I'll let you figure that out.
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Cheers,
Stan H.
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