# Derivative of $$$\cos{\left(x y \right)}$$$ with respect to $$$z$$$

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### Your Input

**Find $$$\frac{d}{dz} \left(\cos{\left(x y \right)}\right)$$$.**

### Solution

**The derivative of a constant is $$$0$$$:**

Thus, $$$\frac{d}{dz} \left(\cos{\left(x y \right)}\right) = 0$$$.

### Answer

**$$$\frac{d}{dz} \left(\cos{\left(x y \right)}\right) = 0$$$A**