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MathematicsInteractive Simulation

Unit Circle & Trigonometry

Controls
45°
Speed1.0x
Show Triangle
Show Coordinates
Show Tangent Line
Use Degrees
Function Graph
Trigonometric Values
Current Angle
45°
Quadrant 1

Primary Functions

sin(θ)√2/2
0.7071
cos(θ)√2/2
0.7071
tan(θ)1
1.0000

Reciprocal Functions

csc(θ) = 1/sin1.4142
sec(θ) = 1/cos1.4142
cot(θ) = 1/tan1.0000

Point on Circle

(0.7071, 0.7071)
(cos θ, sin θ)

Memory Aid: ASTC

All - Quadrant I (all positive)

Students - Quadrant II (sin positive)

Take - Quadrant III (tan positive)

Calculus - Quadrant IV (cos positive)