Question

Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 123, adjacent B C is 27, opposite A C is 120.

Find cos B.

Answer 1

To find cos B in the given right triangle ABC, divide the length of the adjacent side BC by the length of the hypotenuse AB.

Step-by-step explanation:

To find cos B in the given right triangle ABC, we can use the cosine function. Cosine is the ratio of the adjacent side to the hypotenuse. In this case, the adjacent side is BC (27) and the hypotenuse is AB (123).

So, cos B = BC/AB = 27/123 = 9/41.