Sec 8.2 042719.docx - 8.2 The Sum and Difference Formulas OBJECTIVE 1 Understanding the Sum and Difference Formulas for the Cosine Function The Sum and

8.2 The Sum and Difference Formulas OBJECTIVE 1: Understanding the Sum and Difference Formulas for the Cosine Function The Sum and Difference Formulas for the Cosine Function   cos cos cos sin sin            cos cos cos sin sin          OBJECTIVE 2: Understanding the Sum and Difference Formulas for the Sine Function The Sum and Difference Formulas for the Sine Function   sin sin cos cos sin            sin sin cos cos sin          OBJECTIVE 3: Understanding the Sum and Difference Formulas for the Tangent Function