Question

Can someone please explain?

Show that the point (7/25, 24/25) is on the unit circle

Answer 1

The unit circle has all points which has a distance of 1 from the origin. We check the distance of this point using:

d = √(x² + y²)
d = √[(7/25)² + (24/25²)]
d = 1

So this point does lie on the unit circle.