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- documentclass[12pt, a4paper, oneside]{article}
- usepackage{indentfirst}
- usepackage[margin = 2.5cm]{geometry}
- usepackage{tkz-euclide}
- usepackage{amsmath}
- usepackage{amssymb}
- usetkzobj{all}
- begin{document}
- ...some text here...
- begin{align*}
- sec{varphi}=frac{|OS|}{|OR|}=frac{|OS|}{1}=|OS|
- & & cot{varphi}=frac{|OU|}{|OT|}=frac{|OU|}{1}=|OU|
- end{align*}
- {centering
- begin{tikzpicture}[scale=4]
- defcosthirty{0.8660256}
- defsecthirty{1.1547}
- defsinfifteen{-0.258819}
- defcosfifteen{0.9659258}
- draw[color=gray,dotted,step=1cm] (-0.25,-0.25) grid (2.25,1.25);
- draw (cosfifteen,sinfifteen) arc (-15:105:1cm);
- draw[color=gray,dotted] (0,0) -- (30:2.5cm);
- draw[color=gray,dotted] (30:1cm) -- +(-90:0.75cm);
- draw[color=gray,dotted] (30:1cm) -- +(90:0.75cm);
- coordinate (O) at (0, 0);
- coordinate (P) at (costhirty, 0);
- coordinate (Q) at (30:1cm);
- coordinate (R) at (1, 0);
- coordinate (S) at (30:secthirty);
- coordinate (T) at (0, 1);
- coordinate (U) at (30:2);
- draw[thick] (O)--(90:1.25);
- draw[thick] (O)--(0:2.25);
- draw[thick] (Q)--(P);
- draw[thick] (O)--(U)--(T);
- draw[thick] (R)--(S);
- tkzLabelPoints[below left](O)
- tkzLabelPoints[below left](P)
- tkzLabelPoints[left = 5pt of Q](Q)
- tkzLabelPoints[below right](R)
- tkzLabelPoints[below right](S)
- tkzLabelPoints[above left](T)
- tkzLabelPoints[above](U)
- tkzMarkAngle[fill = gray, size=0.3cm, opacity = .3](P,O,Q)
- tkzLabelAngle[pos = 0.2](P,O,Q){$varphi$}
- tkzMarkAngle[fill = gray, size=0.3cm, opacity = .3](T,U,O)
- tkzLabelAngle[pos = -0.2](O,U,T){$varphi$}
- end{tikzpicture}
- textit{scriptsize{Figure 2}}
- }
- end{document}
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