Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.

Trigonometry - Ratios, relationships and applications (non-calculus).
Main page.

 Definition of the 3 basic ratios History of the basic relationships and their meaning. The basic relationships. Trig relationships - Test Yourself 1. Trig relationships - Test Yourself 1 - Solutions. Summary of the basic relationships - for reference and for helping you learn them. Trigonometry identities. Trig identities - Test Yourself 1. Trig identities - Test Yourself 1 - Solutions. Trig identities - Test Yourself 2. Trig identities - Test Yourself 2 - Solutions. Further trigonometric identities. Further identities (sums & diffs) - Test Yourself 1. Further identities (sums & diffs) - Test Yourself 1 Solutions. Further identities (double angles and t) - Test Yourself 1. Further identities (double angles and t) - Test Yourself 1. - Solutions Further identities (trig products) - Test Yourself 1. Further identities (trig products) - Test Yourself 1 - solutions. Solving trigonometric equations (angles in degrees). Steps to follow when solving basic trigonometric equations. Trig equations - Test Yourself 1.. Trig equations - Test Yourself 1 - Solutions. Auxilliary angle relationships and equations. Steps to follow. Auxilliary angles - Test Yourself 1. Auxilliary angles - Test Yourself 1 - Solutions. Sine Rule. Cosine Rule Cosine rule - Test Yourself 1. Cosine rule - Test Yourself 1 - Solutions. Using the cosine rule to approximate the value of π. Angles of elevation and depression. Bearings. Mensuration (arc length and area of a sector). Mensuration - Test Yourself 1. Mensuration - Test Yourself 1 - Solutions. Mensuration - Test Yourself 2.