Sinusoid - Phase Shift
The slider for C can be used to explore the impact of the parameter C on the graph of the sine function or the cosine function.
The red graph is the graph of y = sin(x) (or y = cos(x)) and remains fixed.
The black graph is the graph of y = sin(x - C) (or y = cos(x - C) and will change as the value of C is changed.