Idaho State University

• Academic
• Prospective Students
• Current Students
• Faculty & Staff
• Alumni & Visitors

• Section 6.1: Radian Measure
• Section 6.2: Trigonometric Functions of Angles
• Section 6.3: Evaluating Trigonometric Functions
• Section 6.4: Algebra and Trigonometric Function
• Section 6.5: Right-Triangle Trigonometry
• Section 7.1: Trigonometric Functions of Real Numbers
• Section 7.2: Graphs of the Sine and Cosine Functions
• Section 7.3 Graphs of Sine and Cosine shifts
• Section 7.4: Simple Harmonic Motion
• Section 7.5: Graphs of Tangent and Reciprocal Functions
• Section 8.1: The Addition Formulas
• Section 8.2: The Double-Angle Formulas

Section 6.3: Evaluating Trigonometric Functions

Sketchpad files Here's a Sketchpad file, showing the twelve basic angles on the unit circle, along with reference angles: referenceangles.gsp

Applet This applet shows the twelve basic angles with reference angles.