This week in math we started to learn about trigonometry, the study of triangles. The base of trigonometry are the trigonometric ratios: Sine, Cosine, and Tangent. But in order to understand equations, you need to understand triangles.

This is a right-angle triangle. The corner with the x in it is the reference angle and the hole equation is based around this. The longest side is they hypotenuse marked by a H. The side across from the reference angle is the opposite side, marked with the O. the final side is known as the adjacent side, marked with A, is beside the reference angle.

Here are the equations

Sine = O/Hs

Sine fined the relationship between the percentage of the opposite side to the Hypotenuse.

Cosine = A/H

Sine fined the relationship between the percentage of the adjacent side to the Hypotenuse.

Tangent = O/A

Sine fined the relationship between the percentage of the opposite side to the Adjacent side.

Below is an example of the with all of the equations