Graph of y = cos(x)
Equation: y = cos(x)
y = cos x = sin(x + π/2). Maxima at x = 2kπ, zeros at π/2 + kπ.
Place it next to sine to see the phase shift — a standard trig-graph skill.
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y =
Equation: y = cos(x)
y = cos x = sin(x + π/2). Maxima at x = 2kπ, zeros at π/2 + kπ.
Place it next to sine to see the phase shift — a standard trig-graph skill.