Basic Trigonometry

These notes are slight revisions of those written by Sue Foege.

• Definitions of Sine and Cosine
• Angles in Different Quadrants
• Some Familiar Angles
• Some Basic Identities
• Polar Coordinates of Points in the Euclidean Plane .
• Alternate Definitions of Sine and Cosine
• Definitions of Tangent, Secant, and Cosecant