We know that the sum of the angles in a triangle is 180 degrees. So, we have:
m∠C = 180 - m∠A - m∠B
m∠C = 180 - 40 - 88
m∠C = 52
Now we have a triangle with angles A, B, and C, and side b. We want to find side a. We can use the Law of Sines to do
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