SOLUTION: Given △ABC with C=48°、a=12 , and b=8.
1.Solve for c, rounding your answer first to the nearest tenth and then to the nearest hundrenth.
2.Use the Law of Sines with
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Question 1064381: Given △ABC with C=48°、a=12 , and b=8.
1.Solve for c, rounding your answer first to the nearest tenth and then to the nearest hundrenth.
2.Use the Law of Sines with your first answer for c to find A.
3.Use the Law of Sines with your second answer for c to find A.
4.Use the Law of Cosines to find angle A using your first answer for c.
5.Use the Law of Cosines to find angle A using your second answer for c.
6.Find angle B using the two measures found in question 1.
7.Is angle A acute or obtuse? Why?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
From the law of cosines,
From the law of sines,
So then,
Since , obtuse.
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