My Math Class, by Maya

I am in a really hard math class at school. We are learning trigonometry. Here is an example of a problem we might do: (you can try to figure out the answer, but you willl need a chart of Trigonometrical Ratios. If you think you have it, post it on a comment on this post. I will post the correct answer later.)

There is a triangle with points A, B, and C. Angle A is a right angle. Find the sine, cosine, and tangent measures of angle B if the adjcacent side to it measures 3 cm, the opposite side to it measures 4 cm, and the hypotenuse measures 5cm.

Good luck!