How do you graph #y=sin(x+pi)#?

1 Answer
Feb 23, 2018

We start by rewriting using identities.

#y = sin(x + pi)#

#y = sinxcos(pi) + sin(pi)cosx#

#y = sinx(-1) + 0#

#y = -sinx#

This is the graph of the basic sine function with a reflection over the x-axis.

graph{y = -sinx [-10, 10, -5, 5]}

Hopefully this helps!