FORMULA
FORMULAs 1. Area of a square = Side × Side = S 2 2. The area A of a triangle is given by the formula A=(1/2)*b*h where b is the base and h is the height of the triangle . 3. The area of a circle is pi times the radius squared (A = π r²) 4. Since the diameter is twice the radius , the circumference of a circle is a product of pi and 2r, i.e. 2 ( pi )* r . angle chart sin cos tan chart Sin tan cos rules Trigonometry formula Common trigonometry formulas Trigonometry Formula: Image link: https://upload.wikimedia.org/wikipedia/commons/2/23/Trigonometry_Formulas.png