Solve the Problem $\text { If } \sin \theta = 0.9 \text {, find } \sin ( \theta + \pi )$

Solve the problem.
- $\text { If } \sin \theta = 0.9 \text {, find } \sin ( \theta + \pi )$

A) 0.1
B) -0.1
C) 0.9
D) -0.9