Write the equation of the straight line through the point `(alpha,beta,gamma)` and parallel to z-axis.

Explanation

To find the equation of the straight line that passes through the point \((\alpha, \beta, \gamma)\) and is parallel to the z-axis, we can follow these steps:

### Step 1: Identify the Point and Direction Ratios
We know that the line passes through the point \((\alpha, \beta, \gamma)\). The direction ratios for a line that is parallel to the z-axis are given as \(0, 0, 1\).

### Step 2: Use the General Equation of a Straight Line
The general equation of a straight line in three-dimensional space is given by:
\[
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