Fundamental Trigonometric Identities

Learning Objectives

• Find exact values of tangent, cotangent, secant, and cosecant for special angles.

• Use reference angles to evaluate tangent, cotangent, secant and cosecant.

• Recognize whether each trigonometric function is even or odd. Use these properties to simplify and evaluate expressions.

• Utilize reciprocal and quotient identities to simplify and evaluate trigonometric expressions.

• Utilize alternate versions of the Pythagorean identity to simpilfy and evalute trigonometric expressions.