PC.FGR.3.3
Grade 9
Define the six trigonometric ratios in terms of *x*, *y*, and *r* using the unit circle centered at the origin of the coordinate plane. Interpret radian measures of angles as a rotation both counterclockwise and clockwise around the unit circle.
No visual lesson yet.
The Visual Lesson Generator (Agent 2) will turn this standard into an animated, narrated module. Requires ANTHROPIC_API_KEY.