Trigonometric Ratios

Trigonometric Ratios

The angles and side lengths of a triangle are closely related. These relationships and the functions that come from them are the basis of trigonometry.

each side of the triangle is defined as:
H= The hypotenuse is the longest side.
A= The adjacent side is next to the angle.
O= The opposite side is across from the angle.

​Sine

​How to know which ratio is equal to sin(0)?

When the scale of a triangle increases, what happens to sin(0)?