6. Trigonometry
Unit Circle — Quiz
Test your understanding of unit circle with 5 practice questions.
Practice Questions
Question 1
What is the radius of a unit circle?
Question 2
What are the coordinates of the point on the unit circle corresponding to an angle of $0$ radians?
Question 3
Convert $90^\circ$ to radians.
Question 4
What is the reference angle for $210^\circ$?
Question 5
If a point on the unit circle has coordinates $(x, y)$, what does $x$ represent?