Question

I NEED HELP ASAP, I DON'T UNDERSTAND THIS PROBLEM!!!!!

Answer 1

Answer:

1

Step-by-step explanation:

Cosine is a trigonometric function that is represented by adjacent divided by the hypotenuse. The side adjacent to angle A is AC and the hypotenuse is AB, so we can say cos(A) = $\frac{AC}{AB}$. We can do the same for angle B. The side adjacent to it is BC, and the hypotenuse is again AB. So, we can say

cos(B) = $\frac{BC}{AB}$. We are solving for $\frac{cosA}{cosB}$, so we can substitute the value of those two and solve:

$\frac{\frac{AC}{AB}}{\frac{BC}{AB} }$

$\frac{AC}{AB} * \frac{AB}{BC} = \frac{AC}{BC}$

AC is given to be 3 and BC is also 3, so $\frac{AC}{BC}$ is $\frac{3}{3}$ which is just 1.