In class 9, students are introduced to more advanced mathematical concepts. They study topics such as number systems, algebra, geometry, trigonometry, statistics, and probability. In number systems, they learn about the real numbers, rational numbers, irrational numbers, and complex numbers. In algebra, they study linear equations, quadratic equations, polynomials, and the laws of exponents. In geometry, they learn about lines, angles, triangles, circles, and polygons. They also learn how to use the Pythagorean theorem, congruence and similarity of triangles, and properties of quadrilaterals. In trigonometry, students learn about the trigonometric ratios, identities, and functions. In statistics and probability, they study data handling, measures of central tendency, correlation and regression, and basic probability concepts. These concepts are taught with the help of diagrams, graphs, and real-life examples, making the subject more interesting and relevant to students. BookMyTutor provides online tutors who can help students understand these concepts and solve problems with ease.