For every trigonometry diagram I make, I will include its code here! Basic Right-Triangle diagram \documentclass[12pt, tikz, border=5mm]{standalone} \usetikzlibrary{angles, quotes} \usepackage{siunitx, xcolor} \begin{document} \begin{tikzpicture} \draw (0,0) coordinate[label=below:] (C) -- (4,0) node[midway,below] {opposite line} coordinate[label=below:] (B) -- (0,4) node[midway,above, sloped] {hypotenuse line} coordinate[label=above:POV Angle] (A) -- cycle node[below,midway,sloped] {adjacent line}; \draw (0,4) (0,.4)-|(.4,0); \end{tikzpicture} \end{document} ``` ## Basic Right-triangle ![[../../../attachments/triangles-002.svg|§Attachments/triangles-002.svg]] ```latex \documentclass[12pt, tikz, border=5mm]{standalone} \usetikzlibrary{angles, quotes} \usepackage{siunitx, xcolor} \begin{document} \begin{tikzpicture} \draw (0,0) coordinate[label=below:$C$] (C) -- (4,0) node[midway,below] {$a$} coordinate[label=below:$B$] (B) -- (0,4) node[midway,above] {$c$} coordinate[label=above:$A$] (A) -- cycle node[left,midway] {$b$}; \draw (0,4) (0,.4)-|(.4,0); \end{tikzpicture} \end{document} 45-45-90 triangle \documentclass[12pt, tikz, border=5mm]{standalone} \usetikzlibrary{angles, quotes} \usepackage{siunitx, xcolor} \begin{document} \begin{tikzpicture}[ A angle/.style = {draw, fill=teal!30, angle radius=7mm, angle eccentricity=1.3, midway, inner sep=1pt, font=\footnotesize}, B angle/.style = {draw, fill=teal!30, angle radius=7mm, angle eccentricity=1.3, midway, inner sep=1pt, font=\footnotesize} ] \draw (0,0) coordinate[label=below:$C$] (C) -- (4,0) node[midway,below] {$1$} coordinate[label=below:$B$] (B) -- (0,4) node[midway,above] {$\sqrt{2}$} coordinate[label=above:$A$] (A) -- cycle node[left,midway] {$1$}; \pic[A angle, "$\SI{45}{\degree}$"] {angle = C--A--B}; \pic[B angle, "$\SI{45}{\degree}$"] {angle = A--B--C}; \draw (0,.8) (0,.4)-|(.4,0); \end{tikzpicture} \end{document} 30-60-90 triangle \documentclass[12pt, tikz, border=5mm]{standalone} \usetikzlibrary{angles, quotes} \usepackage{siunitx, xcolor} \begin{document} \begin{tikzpicture}[ A angle/.style = {draw, fill=teal!30, angle radius=7mm, angle eccentricity=1.6, midway, inner sep=1pt, font=\footnotesize}, B angle/.style = {draw, fill=teal!30, angle radius=7mm, angle eccentricity=1.3, midway, inner sep=1pt, font=\footnotesize} ] \draw (0,0) coordinate[label=below:$C$] (C) -- (4,0) node[midway,below] {$1$} coordinate[label=below:$B$] (B) -- (0,8) node[midway,above] {$2$} coordinate[label=above:$A$] (A) -- cycle node[left,midway] {$\sqrt{3}$}; \pic[A angle, "$\SI{30}{\degree}$"] {angle = C--A--B}; \pic[B angle, "$\SI{60}{\degree}$"] {angle = A--B--C}; \draw (0,.8) (0,.4)-|(.4,0); \end{tikzpicture} \end{document} Basic Right-Triangle diagram \documentclass[12pt, tikz, border=5mm]{standalone} \usetikzlibrary{angles, quotes} \usepackage{siunitx, xcolor} \begin{document} \end{document}