Given the point (x, -0.6) lies on the unit circle, complete the ordered pair for quadrant IV. Answer in radical form as needed.
A) (0.8, -0.6)
B) (-0.8, -0.6)
C) (0.4, -0.6)
D) (-0.4, -0.6)

Question

Quizplus · Accepted Answer

The equation of a unit circle is x^2 + y^2 = 1. Given y = -0.6, we substitute and solve for x: x^2 + (-0.6)^2 = 1, which simplifies to x^2 + 0.36 = 1, then x^2 = 0.64. Taking the square root, x = ±0.8. Since we're in quadrant IV, where x is positive, x = 0.8.

Given the Point (X, -0