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# Measuring Rotation

## Explore trig ratios of angles greater than 90 degrees

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Introduction to Angles of Rotation, Coterminal Angles

This lesson covers angles of rotation in the coordinate plane, coterminal and reference angles.
MEMORY METER
This indicates how strong in your memory this concept is
0

## Introduction to Angles of Rotation, Coterminal Angles, and Reference Angles

This lesson covers angles of rotation in the coordinate plane, coterminal and reference angles.
MEMORY METER
This indicates how strong in your memory this concept is
0

## Introduction to Angles of Rotation, Coterminal Angles, and Reference Angles

This lesson covers angles of rotation in the coordinate plane, coterminal and reference angles.
MEMORY METER
This indicates how strong in your memory this concept is
0