Answer :
Answer:Use the identity: sin(A+B) = sin(A)cos(B)+cos(A)sin(B) Substitute x for A and pi for B: sin(x+pi) = sin(x)cos(pi)+cos(x)sin(pi) The second term disappears, ...
Step-by-step explanation:
Answer:Use the identity: sin(A+B) = sin(A)cos(B)+cos(A)sin(B) Substitute x for A and pi for B: sin(x+pi) = sin(x)cos(pi)+cos(x)sin(pi) The second term disappears, ...
Step-by-step explanation: