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Gabe tried to use the law of cosines to find an unknown angle measure in a triangle. His work is shown. What is Gabe’s error?

Gabe tried to use the law of cosines to find an unknown angle measure in a triangle. His work is shown. What is Gabe’s error?
asked 217k views
1 vote
Gabe tried to use the law of cosines to find an unknown angle measure in a triangle. His work is shown. What is Gabe’s error?

asked
User Sahil Patel
by
7.8k points

2 Answers

4 votes

Answer:

C

Explanation:

answered
User Jkatam
by
9.0k points
3 votes

Answer:

the answer is C

Explanation:

Gabe should not have subtracted 56 from

16 + 49.

answered
User Kuzen
by
8.8k points
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