Question

I need answer correct ASAP Please!!!

Answer 1

Answer:

cos(m∠B) = 2√5/5

Step-by-step explanation:

Easiest way is to guess and check on this problem. When you take the cos(m∠B), you would get 6/3√5, rationalized to 2√5/5. That would be the correct answer.

Answer 2

Answer:

Option 1

Step-by-step explanation:

Cos B = $\frac{adjacent}{hypotenuse}$

Where adjacent = 6, Hypotenuse = 3√5

Cos B = $\frac{6}{3\sqrt{5} }$

Cos B = $\frac{2}{\sqrt{5} }$

Cos B = $\frac{2\sqrt{5} }{5}$