Formulae of sum & Difference

Componendo & Dividendo Based questions || Sum & Difference into product & Product into Sum & Difference trigonometry formulas

Standard formula-(2-3) : When product is given change to sum / difference and Important results

Questions based on Product OF sum and difference & Sum & Difference OF product

What is the requirement for writing molecular formulae of different compounds? How are the molecular formulae of the compounds written?

Exercise Questions|Trigonometric Ratios Of Sum And Difference Of Two Angles|Exercise Questions|Formulae To Transfrom The Product Into Sum Or Difference|Formulae To Transfrom Sum Or Difference Into Product|Exercise Questions|OMR

Formulae for the sum and differences of cubes (i)a^(3)+b^(3)=(a+b)(a^(2)-ab+b^(2))(ii)a^(3)-b^(3)=(a-b)(a^(2)+ab+b^(2))

OMR|Trigonometric Functions Of Sum And Difference Of Two Angles|Questions|Complementary And Supplementary Angles|Questions|Double Angle Formulas

STATEMENT -1 : Compound having same general formula may have different empirical formula. and STATEMENT -2 : Compound having same empiricals formula may have different general formula.