Book B: Units 4-6 Essential Mathematics 1: 2

Unit 4 Trigonometry which is about the properties of triangles and how to calculate them. Unit 5 Coordinate Geometry and Vectors. The use of equations and the coordinates of points to investigate geometric problems is an area of mathematics known as coordinate geometry. This covers distances, circles and 3D objects. Quantities such as displacement that have a size and a direction are called vectors. Vectors have many applications in physics and engineering. Unit 6 Differentiation. Displacement is a topic of Calculus. Calculus provides a way of solving many mathematical problems that can t be solved using algebra alone. It s the basis of essential mathematical models in areas such as science, engineering, economics and medicine.