Question

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

Answer 1

1

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) =
`(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) =
`(BC)/(AB)`. We are solving for
`(cosA)/(cosB)`, so we can substitute the value of those two and solve:

`((AC)/(AB))/((BC)/(AB) )`

`(AC)/(AB) * (AB)/(BC) = (AC)/(BC)`

AC is given to be 3 and BC is also 3, so
`(AC)/(BC)` is
`(3)/(3)` which is just 1.