Show That the Equation Is Not an Identity by Finding $\sin ( x + \pi ) = \sin x$

question 187

Multiple Choice

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.
- $\sin ( x + \pi ) = \sin x$

• A) \(\frac { \pi } { 2 }\)
• B) 0
• C) \(2 \pi\)
• D) \(\pi\)

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