Signals and systems/Sinusoidal signals

$x(t)=A*cos(b*t+c)$
where $A$ - amplitude
$b=\frac{2\pi }{T}$; $T$ - period
$c$- phase

cosine - is an even function $x(t)=x(-t)$
sine - is an odd function $x(t)=-x(-t)$

sine function possible to flip horizontally and then flip vertically, as result -same function and plot