I demonstrated for Olivia how the three sides of a right triangle can be used to derive the six basic trigonometric functions. We then studied the special relationships between the sides of 45-45-90 and 30-60-90 degree triangles and the trigonometric functions of all of those angles. I also showed her trigonometric identities including reciprocal functions and Pythagorean triples. We did some problems using the special functions. There was no assignment.