For the Graph of a Circular Function Y = F(x) $$1 - \sin ^ { 2 } \theta$$

Multiple Choice

For the graph of a circular function y = f(x) , determine whether f(-x) = f(x) or f(-x) = -f(x) is true.
- $$1 - \sin ^ { 2 } \theta$$

A) $\cos \theta$
B) $- \cos ^ { 2 } \theta$
C) $\cot ^ { 2 } \theta$
D) $\cos ^ { 2 } \theta$