Given the value of an expression, we can find the variable and value of related expressions
Trigonometry basics are discussed here for X standard students
Cartesian coordinates - Distance formula - Section formula - Area of triangle - Slope of a line - Line equations - Parallel and Perpendicular lines - Problems on points and lines explained here
Polynomial - Degree of polynomial - Zero of polynomial - Polynomial behavior - Graphs of polynomial - Turning points are explained
Quadratics - Function - Equation - Slope - Solution explained
Numbers - Rational Numbers - Number Operations - sets - Functions - Relations explained