Essential Mathematics: Sets, Functions and Basic Trigonometry

A set is used to identify things, relate them and group them together. Set theory is important because it helps us to solve some real-life problems. Not only that, it will also help us understand Functions. A function, which is used to relate two items uniquely is a good method to understand physical relations, like the relationship between voltage and current! And trigonometry is used in every sphere of life, you can find heights of buildings, distances to people just by using triangles and trigonometry!