7. Topic 7(COLON) Introduction to Trigonometry

Lesson 7.3: Radian Measure And The Unit Circle — Quiz

Test your understanding of lesson 7.3: radian measure and the unit circle with 5 practice questions.

Practice Questions

Question 1

What is the radian measure of a 90-degree angle?

Question 2

How many radians are there in a complete circle?

Question 3

What is the formula to find the arc length ($s$) of a circle given the radius ($r$) and the angle in radians ($\theta$)?

Question 4

If a sector of a circle has a radius of $4$ units and the central angle is $\frac{\pi}{3}$ radians, what is the area ($A$) of the sector?

Question 5

In which quadrant of the unit circle is the angle $\frac{5\pi}{4}$ radians located?