Table of contents
- 0. Review of College Algebra4h 43m
- 1. Measuring Angles39m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
3. Unit Circle
Defining the Unit Circle
Problem 3.13a
Textbook Question
Textbook QuestionUse the formula ω = θ/t to find the value of the missing variable.
ω = 0.91 radian per min, t = 8.1 min
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
0m:0sPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Angular Velocity
Angular velocity (ω) is a measure of how quickly an object rotates or moves around a central point, expressed in radians per unit of time. In this context, it indicates the rate of change of the angle (θ) with respect to time (t). Understanding angular velocity is crucial for solving problems involving rotational motion.
Recommended video:
03:48
Introduction to Vectors
Time in Rotational Motion
In the formula ω = θ/t, time (t) represents the duration over which the angular displacement (θ) occurs. It is essential to accurately measure or define the time interval to determine the angular displacement correctly. This relationship helps in understanding how long an object takes to complete a certain angle of rotation.
Recommended video:
2:17
Example 2
Angular Displacement
Angular displacement (θ) refers to the angle in radians through which an object has rotated about a specific axis. It is a key variable in rotational motion, as it quantifies the change in position of the rotating object. In the given formula, knowing ω and t allows us to calculate θ, which is vital for understanding the overall motion.
Watch next
Master Introduction to the Unit Circle with a bite sized video explanation from Callie Rethman
Start learningRelated Videos
Related Practice