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OpenStudy (anonymous):
find the value of b
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OpenStudy (anonymous):
OpenStudy (anonymous):
Do you know the cosine rule?
OpenStudy (anonymous):
Using cosine rule: \[b^2 = a^2 + c^2 - 2ac cos B\] \[b^2 = 6.5^2 + 8^2 - 2(6.5)(8) cos 37\]
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