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AB = 20 cm, m angle A = 30 degrees, and m angle C = 40 degrees. Express the number of centimeters in the length of line BC.

 

 Nov 4, 2020
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I'm too lazy to do this, but I'll give you a hint:

 

Since all 3 angles and 1 side are known, you can use the law of sines to calculate side BC.

 Nov 4, 2020

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