Life of Fred: Trigonometry Sines, Cosines and Tangents, Graphing, Significant Digits, Trig Functions of Any Angle, Trig Identities, Graphing a s inb(x + c), Radian Measurement, Conditional Trig Equations, Functions of Two Angles, Oblique Triangles, Inverse Trig Functions, Polar Coordinates, Polar Form of Complex Numbers, Preview of all of Calculus. Hardback, 320 pages. $29 Life of Fred: Trigonometry...........$29.00 View sample of Trigonometry by clicking here. (You need Adobe Reader to view this. Click here to install it on your computer. It's free!)

Fred’s Home Companion: Trigonometry Divides Life of Fred: Trigonometry into daily lessons. (A study guide) Life of Fred: Trigonometry answer key. Many more trigonometry problems. Hardback, 128 pages. $14 Companion: Trigonometry.......$14.00