Precalculus

Updated on March 5, 2017

These websites offer precalculus lessons, help, problems and solutions.  Learn trigonometry, vectors and polar coordinates, nonlinear equations, matrices and more.  Some sites have practice tests with solutions.

Topics in Precalculus

TheMathPage provides comprehensive explanations and problems in 28 topics related to precalculus.  They range from functions, polynomials and the quadratic equation, to logarithms, factorials, and mathematical induction.

Topics in Trigonometry

TheMathPage provides comprehensive explanations, problems and solutions on all aspects of trigonometry.  Topics include ratio and proportion, the trigonometric functions of the various kinds of triangles, the laws of sines and cosines, circles and arcs, line values, graphs of trigonometric…

Khan Academy Precalculus

Khan Academy has a series of video lessons and interactive practice on precalculus.  The videos cover topics including trigonometry, conic sections, limits, sequences and series, binomial theorem, interest and compounding, polar coordinates, parametric equations, function inverses, logarithmic scale, and more. …

Trig Cheat Sheet

This Trig Cheat Sheet is a pdf reference outlining the most important points of trigonometric functions.  It includes diagrams and definitions of trig functions, facts and properties, formulas and identities, a unit circle, inverse trig functions, and laws of sines,…

Free Math Help: Trigonometry

View textbook style lessons as well as video examples from the Geometry section.  Videos include the laws of sines and cosines and trigonometric functions, identities and ratios.

Trigonometry I

From site: This page is devoted to the learning of Trigonometry I (basic trigonometry). It is part of the Secondary 4 (Grade 10) math curriculum where I teach, but this material is required knowledge in secondary school Math no matter where you study.

High School Precalculus

These free downloadable demonstrations give students a graphic representation of the mathematical calculations they are learning.  There are 90 demonstrations from composing functions using dynagraphs to roots of multiple numbers, from vector addition in a plane to continuous exponential growth.