Question

I need help ASAP please

Answer 1

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$\sqrt{2}$