What Is a Radian?
By Roy Peterson
In this learning activity you'll explore a graphical depiction of a radian for angular measurement.
Excel: Rectangular to Polar Conversion for the Phase Angle in Radians
By Patrick Hoppe
The conversion from rectangular to polar mode phase angle in radians is demonstrated in Excel.
Sine Bar
By Barbara Anderegg
In this learning activity you'll examine how a sine bar is used to measure angles.
Excel: Converting Radians to Degrees
Students read how to use the DEGREES() function to convert radians to degrees.
Mathematical Expression of an AC Sine Wave
Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.
The TI-83 Plus Calculator: Using the Arctangent Function
Learners read how to use the arctangent function to calculate the theta of an angle. The proper keystrokes are displayed.
Practical Trigonometry
After a brief review, the student solves five practical shop problems using right angle trigonometry.
Learn to Count by Common Radian Units
By Laura Shears
The target audience of this learning object is trigonometry students who have already learned what a radian is and have already derived the key values of the coordinates associated with common radian units, but now need to practice finding those values on the unit circle. The student does not need to know the definition of the six trig functions to do this activity.
Evaluating Trigonometric Ratios
In this learning activity you'll evaluate the Sine, Cosine, and Tangent ratios of a right triangle.
Law of Sines
In this learning activity you'll apply the Law of Sines in the solution on an oblique triangle when provided with two angles and the side opposite one of the angles.
Evaluating the Six Trigonometric Functions
In this learning activity you'll evaluate the six trig functions using a scientific calculator.
Statics - Trig: Pythagorean Theorem Calculations Using Excel
By Steve Whitmoyer
Learners examine how to solve problems using the Pythagorean Theorem in Excel. Practice problems are included.
Finding the Coordinates of the Point Where an Arc Blends Into a Line
By Alan Dohm
Students use trigonometry to find the coordinates of the blending point where a line and an arc meet. Learners are given the coordinates of the center of the arc, the radius of the arc, and the direction of the line.
Statics - Trig: Law of Sines: Calculations Using a TI-36X Calculator
In this animated object, learners use a TI-36X calculator to determine forces.
Statics -- Trig: The Law of Sines
In this interactive object, students use the Law of Sines to calculate forces.
Statics - Trig: Pythagorean Theorem Calculations Using a TI-86
In this animated and interactive object, the learner uses a TI-86 calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.
Statics - Trig: The Law of Cosines Using a TI-36X Calculator
Learners apply the Law of Cosines to determine forces using a TI-36X calculator in this animated object.
Statics - Trig: The Pythagorean Theorem Using a TI-36XCalculator
In this animated and interactive object, the learner uses a TI-36X calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.
Statics - Trig: The Law of Sines Using a TI-86 Calculator
In this interactive and animated object, learners apply the Law of Sines to determine forces using a TI-86 calculator.
Statics - Trig: The Pythagorean Theorem
In this interactive object, learners use the Pythagorean Theorem to calculate forces.
Statics - Trig: Pythagorean Theorem Calculations Using a Casio fx-260
In this animated and interactive object, the learner uses a Casio fx-260 calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.
Standard-Position Angles and Reference Angles
By Kevin Ritzman
The learner will recognize standard-position angles and find the reference angle for any standard-position angle.
Statics - Trig: Law of Cosines Using a TI-86 Calculator
In this interactive and animated object, learners apply the Law of Cosines to determine forces using a TI-86 calculator.
Practical Trigonometry (Screencast)