Trigonometric Functions of Two Angles --Pre-University Course (PUC) Mathematics sem-1 with solutions

Trigonometric Functions of Two Angles --Pre-University Course (PUC)  Mathematics sem-1 with solutions 

 Trigonometric Functions of Two Angles

Learning Objectives: 

 To derive the angle sum and the angle difference formulae of trigonometric functions AND 

 To solve problems related to above formulae