Sine, Cosine, Tangent, and Cotangent

9000033803

Level: 
B
In the following list identify a true statement about the function \(f(x) =\sin x\), where \(x\in \left [ -\frac{\pi }{2}; \frac{\pi } {2}\right ] \).
The function \(f\) is increasing.
The function \(f\) is decreasing.
The function \(f\) is neither increasing nor decreasing.
The function \(f\) is non-increasing.