Mr. Helberg's Website
Wheaton High School
Hon. Precalc Web Teachings
Hon. Precalc Web Teachings
The following are great web videos that might help you with concepts in my classes
Unit 2 - Trigonometry Functions
Entire Unit Circle
Finding a Missing Side (Right Triangle)
Coterminal and Reference Angles
Unit 3 - Trigonometry Identities
Solving Trig Identities - Easy
Solving Trig Identities - Medium
Solving Trig Identities - Hard
Unit 6 - Vectors
Vector Addition and Scalar Multiplication
Complex #s in Trigonometric Form
Vector Subtraction
DeMoivre's Theorem
Parametric Equations with Sine & Cosine
Determining the nth Root of Complex #s
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