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anonymous
 one year ago
Please help:
anonymous
 one year ago
Please help:

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A little confused....

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2Here is the law of cosines:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0try to first find a since you are been given angle A

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2We'll say side c = 15.8 and side b = 7.4 and Angle A = 54 degrees We'll call the side we need to find is side a

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2From the Law of cosines, we see that a^2 = b^2 + c^2 (2bc * cos(A)) a^2 = 7.4^2 + 15.8^2 (2*7.4*15.8 * 0.58779) a^2 = 54.6 + 249.64 137.4488136 a^2 = 166.9511864 a = square root (166.9511864) a = 12.9209591904

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2To find another angle, let's use the Law of Sines

wolf1728
 one year ago
Best ResponseYou've already chosen the best response.2So we know side a / sine (A) = side b / sine (B) Therefore, sine (B) = (sine (A) * side b) / side a sine (B) = sine (54) * 7.4 / 12.9209591904 sine (B) = 0.80902 * 0.5727128993 sine (B) = 0.4633361898 Angle B = arc sine of Angle B Angle B = 27.603 Degrees We know angle A= 54 and angle B = 27.603 We also know that a triangle contains 180 degrees, so Angle (C) = 180 54  27.603 Angle (C) = 98.397 degrees
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