This series of booklets is designed to give a thorough grounding in basic trigonometry. A good understanding in this topic is essential for all those people who wish to go on and study Mathematics and other science subjects like, Physics, Chemistry and Engineering.Often the fundamental concepts like these are frequently not completely understood leading to confusion and often dissatisfaction and can result in people giving up on the subject altogether.This is a shame because such confusion can often be attributed to poor teaching or unexplained misconceptions. This series of booklets sets out to explain fully and clearly every step throughout with everything presented in an easy to understand format.All booklets in this series are competitively pricedThis booklet is Basic Trigonometry module BT1 in the series and contains the following anglesExterior anglesCorresponding anglesAlternate anglesDifferent types of TrianglesAreas of trianglesQuadrilaterals Areas of quadrilateralsTheorem of PythagorasPolygonsRegular PolygonsAreas of polygonsSine, Cosine and Tangent functionsSolving triangle problems Sine, cosine and Tangent graphs25 fully worked solutions 33 pages