Question

Which of the following could be points on the unit circle?

Answer 1

see below

Explanation:

For a point to be on the unit circle, the sum of the squares of the point's coordinates must be 1. Each value that is a fraction will have a square that is smaller than it is.

A: the given values add to 1; the sum of their squares cannot be 1.

B: a correct choice

C: one of the given values is more than 1, so the point cannot be on the unit circle

D: a correct choice