Answer:
1 unit
Step-by-step explanation:
You want the length of the line segment from the origin to point A shown in the diagram.
Point A
Point A lies on a circle centered at the origin and passing through points (0, 1) and (1, 0). That means the circle has a radius of 1. Since point A lies on that circle, its distance from the origin is 1.
The length of the hypotenuse of your triangle is 1 unit.
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Additional comment
We're familiar with drawing triangles in a unit circle, so we presume that it the intent of the exercise.
If not, there are infinitely many right triangles containing OA as one of their sides.
As with a lot of contemporary math curriculum, questions like this are difficult to answer unless you know the end result of the step-by-step it is asking you to do. That is, you have to know what it is trying to teach you before you can do the steps it is using to teach you. Good luck.
