Question

What is the simplified form of sin(x + p)?


a. cos x
b. sin x
c. –sin x
d. –cos x

Answer 1

so c would be my answer

Answer 2

yes
understand ?
if not look at second solution
sin(x+y)=sinx cos y +cos x siny
so
sin(p+x)= sin pi cos x +cos pi sinx
= 0 +(-1)sinx