2 years ago

Please answer this question now correct

Mathematics

1 answer:

Natalka [10]2 years ago

3 0

Answer:

Step-by-step explanation:

cosine law

a²=b²+c²-2(bc)cos44 (c=20, b=15)

a²=15²+20²-2(15*20)cos44

a=√15²+20²-2(15*20)cos44

a=13.91

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