In this learning object you'll review direct, inverse, joint, quadratic, and combined variations.

Students follow step-by-step directions for entering data into a spreadsheet and reporting the results.

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.

Learners use the lowest common denominator to simplify and then solve equations with algebraic fractions. Immediate feedback is provided. This animated object has audio content.