One point connects angle, coordinates and ratios
Turn the radius. Watch cosine and sine move.
Angle45°
cos θ is the horizontal coordinatesin θ is the vertical coordinate
The pointP = (cos θ, sin θ) = (0.707, 0.707)
→Always on radius 1cos²θ + sin²θ = 1.000
Check your understanding
Match the coordinate
Which point belongs at 120°?