Which shows a correct simplification of sine of open paren x plus pi close paren ?
Answer
A
sine of open paren x plus pi close paren is equal to sine x plus cosine x is equal to sine times x times 1 plus cosine times x times 0 is equal to sine of x
B
sine of open paren x plus pi close paren is equal to cosine x minus sine x is equal to cosine times x times negative 1 minus sine times x times 0 is equal to negative cosine times x
C
sine of open paren x plus pi close paren is equal to sine x plus cosine x is equal to sine times x times negative 1 plus cosine times x times 0 is equal to negative sine times x
D
sine of open paren x plus pi close paren is equal to cosine x minus sine x is equal to cosine times x times 1 plus sine times x times 0 is equal to cosine of x