Question 983867
Same problem, different angle.
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Find B in the following triangle, if it exist.
a= 31m, b=42m, c=60m
(Enter your answer rounded to the nearest ten minutes.)
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Use the Cosine Law:
{{{b^2 = a^2 + c^2 - 2ac*cos(B)}}}
{{{1764 = 961 + 3600 - 3720*cos(B)}}}
cos(B) =~ 0.75188172
B =~ 41º10'