Answer:
The line is tangent.
Explanation:
For the line to be tangent ∠NLM must be 90°.
Because we only have side lengths we can use Pythagorean theorem to prove that ΔNLM is a right triangle making ∠NLM a right angle.
Pythagorean theorem states:

Substitute values
Because side NM is opposite ∠LNM if the triangle is a right triangle that would be the hypotenuse so we will use that value for c^2. Variable a and b are interchangeable.


Add

Because 100 does equal 100 ΔLNM is a right triangle making ∠LNM a right angle so therefore line LM is tangent to the circle.