Curated OER
Further Trigonometry
In this trigonometry learning exercise, students solve and complete 5 various types of problems. First, they find the exact ratios for each trigonometric function. Then, students use the expansion to find the exact value of a given trig...
Curated OER
Radian Measures
In this math instructional activity, students determine the radian measures for the different fractions or angles for the circles. Then students apply the knowledge to an advanced word problem in number 13.
Curated OER
Sixteen Angle Pre-calculus Trig Problems
In this angle worksheet, students solve ten multiple choice and six free response questions. These precalculus questions cover angles, radians, and right triangles.
Curated OER
Radian, The Snowman
In this snowman worksheet, students label points on a circle with radian measures. They identify the coordinates of the points outside the circle. Students decorate the snowman. This one-page worksheet contain 1 problm. The answer is...
Curated OER
Review 13.1-13.2: Unit Circle
In this unit circle activity, students find the sine, cosine, tangent, cotangent, and co-secant of given values. They determine the exact value of trigonometric ratios. Students convert from degrees to radians. This two-page activity...
Curated OER
Arc Length and Radian Measure
In this arc length worksheet, students convert radians to degrees and degrees to radian measure. Ten problems are provided on this one-page worksheet.
Curated OER
Angle and Radian Measure
In this angle and radian measure activity, students find the measurement of a central angle. Students determine the speed of rotation, linear speed of a point, and radians per second. This two-page activity contains twelve problems. ...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Degree and Radian Measure
Twenty-four problems present a variety of practice working with degree and radian measure. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
CK-12 Foundation
Ck 12: Angular Momentum
[Free Registration/Login may be required to access all resource tools.] In this online lesson students will begin to understand what is meant by a rigid body. Learn what torque is and how to use it in solving problems.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Radians
Northeast Parallel Architectures Center of Syracuse University offers a quick overview of radian measurement of angles. Also includes an example.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: Conversion
This site displays the formulas for the simple conversions of degrees to radians and radians to degrees. Near the bottom of the page there are examples of these conversions.
Other
Randelshofer / Online Scientific Calculator
This is an online scientific calculator! Just type as if you were using a handheld calculator. Includes trigonometric functions, degrees, radian modes and other useful functions.
CK-12 Foundation
Ck 12: Trigonometry: Rotations in Radians
[Free Registration/Login may be required to access all resource tools.] Express rotations in radian measure
Lawrence Hall of Science
The Math Page: Trigonometry: Radian Measure
Here is a site that clearly and thoroughly explains the radian measure of angles. There are example problems solved, problems for the student to attempt, and answers to the student problems.
Khan Academy
Khan Academy: Radians and Arc Length
Solve problems related to radians and arc length like finding an arc length given the central angle and radius. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Trigonometry: Six Trigonometric Functions and Radians
[Free Registration/Login may be required to access all resource tools.] The argument of trigonometric functions can be measured in radians.
Sophia Learning
Sophia: Practice Measuring Circular Motion
A narrated screencast which demonstrates how to measure circular motion. [4:41]
BBC
Bbc: Radians and Equations
BBC provides a tutorial that explains how radians are related to degrees and demonstrates how to solve trig equations in radian units. Examples and a practice test are available.
Savvas Learning
Pearson Education: Radian and Degree Angle Measures [Pdf]
This resource details how to convert between radians and degrees with worked examples. It also looks at special radian measures that are used often.
Khan Academy
Khan Academy: Radians and Degrees
Convert angle measures given in degrees to radians and vice versa. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Illustrative Mathematics
Illustrative Mathematics: F Tf.1 What Exactly Is a Radian?
For this task, students use a piece of string or another tool to measure the radius of the circle and then mark off the corresponding arc length on the unit circle as many times as they need to for 0, 1, 2, 3, 4, 5, and 6 radians. They...
Purple Math
Purplemath: Converting Between Radians and Degrees
Describes degrees and radians with respect to angles, the reason for the invention and use of radians, and how to convert between radians and degrees.
Mathigon
Mathigon: Geometry: Circle and Pi: Degrees and Radians
Rather than dividing a circle into some number of segments (like 360 degrees), mathematicians often prefer to measure angles using the circumference of a unit circle - a circle with radius 1. This way of measuring angles is called...
CK-12 Foundation
Ck 12: Trigonometry: Conversion Between Degrees and Radians
[Free Registration/Login may be required to access all resource tools.] Express a degree measurement in radians.