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Salsk061 [2.6K]
2 years ago
12

I need help ASAP please

Mathematics
1 answer:
trapecia [35]2 years ago
5 0

Answer:

B

Step-by-step explanation:

Using the cosine ratio in the right triangle and the exact value

cos45° = \frac{1}{\sqrt{2} } , then

cos45° = \frac{adjacent}{hypotenuse} = \frac{3}{c} = \frac{1}{\sqrt{2} } ( cross- multiply )

c = 3\sqrt{2}

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