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gtnhenbr [62]
2 years ago
10

Please help me with this math problem!!!!!​

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
3 0

Answer:

Step-by-step explanation:

\cos ~A=0.5=cos~60 \\A=60^\circ\\B=180-A=180-60=120\\\angle~B=120^\circ

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