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Licemer1 [7]
3 years ago
12

Calculate cose to two decimal places.

Mathematics
1 answer:
Monica [59]3 years ago
4 0

Answer:

B. 0.69

Step-by-step explanation:

Law of Cosines: cos A = (b² + c² - a²) / 2bc

cosθ = (7² + 11² - 8²) / 2*7*11 = 106/154 = 0.688 ≈ 0.69

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Compute each sum or difference<br> 9/10+7/9<br> 1/2-3/11<br> 2/5-1/15
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Read 2 more answers
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