am860886
am860886 am860886
  • 01-04-2021
  • Mathematics
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I need help ASAP please

I need help ASAP please class=

Respuesta :

jimrgrant1 jimrgrant1
  • 01-04-2021

Answer:

B

Step-by-step explanation:

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

cos45° = [tex]\frac{1}{\sqrt{2} }[/tex] , then

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

c = 3[tex]\sqrt{2}[/tex]

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