In a subtraction problem, you have the minuend, subtrahend and the difference.
The minuend is the number that's being subtracted.
The subtrahend is the number doing the subtraction.
The difference is the answer to the subtraction problem.
1 unit left and reflection across x axis
Answer:

Step-by-step explanation:
Notice that you are given an isosceles right-angle triangle to solve, since each of its two acute angles measures
. Then such means that the sides opposite to these acute angles (the so called "legs" of this right angle triangle) must also be of the same length (x).
We can then use the Pythagorean theorem that relates the square of the hypotenuse to the addition of the squares of the triangles legs:

We use just the positive root, since we are looking for an actual length. then, the requested side is:

<span>0.01388888888 is your answer
</span>