How to find the angle of inclination of a line.
How to solve a simple sine equation: sin (theta) = 1/2.
How to solve a sine equation by factoring: 4 [sin(theta)]^2 = 2.
How to derive the equation for a circle using the distance formula.
How to identify the graph of a stretched cosine curve.
How to derive the equation for the distance between two points using the Pythagorean Theorem.