Choose a justification for each step in the derivation of the sine difference identity. Step 1: Step 2: Distributive property Step 3: Associative property Step 4: Factoring out –1 Step 5: Step 6: Step 7:
Selection 1:Cofunction identity
Selection 2:Sine difference identity
Selection 3:Cofunction Identity
Selection 4:Cosine function is even, sine function is odd.