Question

Which of the following could not be points on the unit circle?

A. (1.1)
B. (0,1)
C. (0,0)
D. (0.8, -0.6)

Answer 1

The point that could not be on the unit circle is A. (1.1).

The correct answer is a.

Step-by-step explanation:

The points on the unit circle have coordinates (x, y) where x and y represent the cosine and sine values of an angle, respectively. The unit circle has a radius of 1, so any point on the unit circle must have coordinates that satisfy the equation x^2 + y^2 = 1.

Let's check each option:

1. A. (1.1): This point does not satisfy the equation x^2 + y^2 = 1, so it cannot be on the unit circle.
2. B. (0,1): This point satisfies the equation x^2 + y^2 = 1, so it can be on the unit circle.
3. C. (0,0): This point satisfies the equation x^2 + y^2 = 1, so it can be on the unit circle. It represents the origin.
4. D. (0.8, -0.6): This point satisfies the equation x^2 + y^2 = 1, so it can be on the unit circle.

Therefore, the point that could not be on the unit circle is A. (1.1).