Simplify. \( \cos \left(\frac{\pi}{2}-x\right) \csc \left(\frac{\pi}{2}-x\right) \) \( [?] \)

To simplify \( \cos \left(\frac{\pi}{2}-x\right) \csc \left(\frac{\pi}{2}-x\right) \), you can use the co-function identities. First, use the identity \( \cos \left(\frac{\pi}{2}-x\right) = \sin(x) \) and \( \csc \left(\frac{\pi}{2}-x\right) = \sec(x) \). Therefore, the expression becomes: \[ \sin(x) \cdot \sec(x) = \sin(x) \cdot \frac{1}{\cos(x)} = \frac{\sin(x)}{\cos(x)} = \tan(x) \] Thus, the simplified form is: \[ \tan(x) \]