Trigonometry: Circles and Angles
In this circle and angel activity, students identify angles that correspond to a point on the unit circle. They give their solution in both degrees and radians. This two-page activity contains 20 problems.
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Special Triangles and the Unit Circle
Calculate exact trigonometric values using the angles of special right triangles. Beginning with a review of the unit circle and trigonometric functions, class members use their knowledge of special right triangles to find the value of...
11th - 12th Math CCSS: Designed
Basic Trigonometry and Radians
A fabulous set of examples and problems that introduce basic trigonometry concepts, this packet is set apart by the care it takes to integrate both radians and degrees into the material. After defining radians, the author demonstrates...
9th - 12th Math CCSS: Adaptable
New Review Special Right Triangles and Right Triangle Trigonometry
Right triangles are so special! Use special right triangles to discover the trigonometric ratios. Pairs construct special right triangles and find the values of the ratios of the sides. In the process, they discover the ratios stay the...
9th - 11th Math CCSS: Adaptable
Trigonometric Functions: The Unit Circle
This comprehensive problem and note set walks the class through a large part of simplifying trigonometric expressions using the unit circle and identities. From identifying angles to applying appropriate trigonometric ratios, problems...
10th - 12th Math CCSS: Adaptable
Measure Angles in Standard Position Using the Coordinate Plane
The mechanics of measuring angles is a skill that is often taken for granted in an upper-level math class. This clear and detailed video presentation bridges the gap between identifying angles in geometry, and using their unit-circle...
5 mins 9th - 12th Math CCSS: Designed