Question

Consider these four points: A(4,3), B(1/2,1/5), C(0,6,0,7, and D(3/4, square root7/4) Which point lies on the circumference of the unit circle?

Point_______________ lies on the circumference of the unit circle.

Answer 1

If the point lies on the unit circle, it should satisfy it's equation :
\[x^2 + y^2 = 1\]
Put each point (x,y ) in the equation the one which gives you 1 is it.