We are given two lines that are tangent to a circle. The angle formed by the tangent lines is related by the minor and mayor ars by the following formula:
The formula is:

Where:

In this case, we have that the minor arc is:

The major arc is determined using the fact that the sum of the major and minor arcs must add up to 360 degrees:

Substracting "m" from both sides:

Substituting the value of "m":

Now, we substitute the values in the formula for "x":

Solving the operations:

Therefore, the value of "x" is 82.