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riadik2000 [5.3K]
3 years ago
7

Applying the Laws of Sines and Cosines

Mathematics
1 answer:
Naddika [18.5K]3 years ago
4 0
Essentially, you would take the formula for the laws of sines and cosines: a^2=b^2+c^2-2bc(Cos(theta)). a is the unknown side you are solving for and theta is the opposite angle to a. Since the angle opposite to R is supplementary to the 50 degree angle, 180-50=130. b could be assigned to either of the given sides; the same goes for c (e.g. b=40 and c=38). Thus, the question should be straightforward in plugging in quantities and solving for the resultant force. 
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