3. Trigonometry

Unit Circle — Quiz

Test your understanding of unit circle with 5 practice questions.

Practice Questions

Question 1

On the unit circle, what does the x-coordinate of a point represent for a given angle $\theta$?

Question 2

What are the coordinates of the point on the unit circle corresponding to an angle of $90^\circ$?

Question 3

If a point on the unit circle has coordinates $\left(-\frac{\sqrt{3}}{2}, -\frac{1}{2}\right)$, what is the sine of the corresponding angle?

Question 4

Which of the following angles has a cosine value of $-1$?

Question 5

What is the value of $\sin(270^\circ)$?