Does the Pythagorean Theorem sound like greek to you? Confusing sine with astrological sign? The Standard Deviants are more fun than a textbook and cheaper than hiring a tutor! This trigonometry tutorial will guide you through the twisted world of the Pythagorean Theorem, sines, cosines, tangents, amplitude, curves, double-angle formulas, sum-to-product-formulas and identities, and more! Includes Trigonometry Parts 1&2 at a 15% discount.