CoreProTrig Functions
Cosine
f(x) = cos(x)
Overview
The cosine function is the horizontal component of circular motion. It's an even function.
Domain
(-∞, +∞)
Range
[-1, 1]
Symmetry
Even
Key Properties
1
Period: 2π
2
Amplitude: 1
3
Even function
4
Zeros at x = π/2 + nπ
Key Insight
cos(x) = sin(x + π/2). Cosine starts at its maximum (1) while sine starts at 0.
Visualize Cosine
Interact with the graph, adjust parameters, and see how the function behaves in real time.