- The document introduces trigonometry basics including the sine, cosine, and tangent functions and how they relate lengths of sides of right triangles to angle measurements.
- It provides examples of using each trigonometric function to solve for unknown side lengths given certain known values.
- The Pythagorean theorem is also introduced as a way to find the length of any side of a right triangle when the other two sides are known. Sample problems are worked through as examples.