# Tikz graph for sine function of y=sin(2x+pi/3)

I am looking to create the sine graph for function y=sin(2x+pi/3), but it looks straight line.

\begin{tikzpicture}
\begin{axis}[axis lines=middle,axis on top,xlabel=$x$,ylabel=$y$,
xmin=-4,xmax=4,ymin=-1,ymax=1,ytick=\empty,
xtick={-3.66,-0.52,2.62},xticklabels={$\frac{-7\pi}{6}$,$\frac{-\pi}{6}$,$\frac{5\pi}{6}$,}]

\end{axis}
\end{tikzpicture}


By default the arguments of trigonometric functions are in degrees, so you need to convert them from radians to degrees to be able to feed them into the sin function. This can be achieved by wrapping the argument into deg, or by by using trig format=rad.

\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\begin{document}
\begin{tikzpicture}
\begin{axis}[axis lines=middle,axis on top,xlabel=$x$,ylabel=$y$,
xtick={-7*pi/6,-pi/6,5*pi/6},xticklabels={$\frac{-7\pi}{6}$,$\frac{-\pi}{6}$,$\frac{5\pi}{6}$,}]

• @ZEESHAN But the parser understands xtick={-7*pi/6,-pi/6,5*pi/6}. If you only have three labels, this might be the easier way to go. – marmot Jun 13 at 3:53