Unit Circle Explorer
Angle in, sine and cosine out
This tool plots a point at angle θ on the unit circle alongside the sin(θ)/cos(θ) curves it traces out. Drag the angle slider, or click a preset angle, to see the relationship move.Unit Circle
Degrees
45°
Radians
Ï€/4
sin(θ)
0.7071
cos(θ)
0.7071
e^(iθ) = cos θ + i·sin θ
0.7071 + 0.7071i
e^(iÏ€) + 1 = 0 — Euler's identity
sin(θ) & cos(θ) vs θ
sin(θ)
cos(θ)
Current θ
DRAG THE ANGLE SLIDER OR CLICK A PRESET
PROJECT: LIGHTSTRUC AISHEET: TOOLS · UNIT CIRCLESOURCE:
unit-circle.htmlREV 2.1