Question 731635
Use the Law of Cosines to solve the triangle. (Round your answers to two decimal place.)
a = 4,  b = 5,  c = 7 
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{{{c^2 = a^2 + b^2 - 2ab*cos(C)}}}
Do the same to find a 2nd angle.
Then, use the fact that the 3rd angle = 180 - (the other 2)