4.2 - Figur - Enhetscirkeln med vinkeln -40° och linjen med riktningskoefficient tan -40°

Förberedande kurs i matematik 1

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Nuvarande version (22 mars 2008 kl. 12.49) (redigera) (ogör)
 
Rad 101: Rad 101:
drawarrow (0,-Ly_lwr)--(0,Ly_upr);
drawarrow (0,-Ly_lwr)--(0,Ly_upr);
label.top(btex \small\strut $y$ etex, (0,Ly_upr));
label.top(btex \small\strut $y$ etex, (0,Ly_upr));
 +
 +
% Angle label
 +
r := 1.2;
 +
picture p_label;
 +
p_label := thelabel.lrt(btex $-40^{\circ}$ etex, origin);
 +
p_label := p_label scaled 0.7 shifted (1.2*r*dx*(dir -5)+(-2pt,0));
% The circle
% The circle
Rad 111: Rad 117:
..cycle;
..cycle;
pickup pencircle scaled 0.6pt;
pickup pencircle scaled 0.6pt;
-
draw p_circle withcolor lightblue;
+
s := xpart (p_circle intersectiontimes subpath(0,1) of bbox p_label);
 +
t := xpart (p_circle intersectiontimes subpath(2,3) of bbox p_label);
 +
draw subpath(0,s) of p_circle withcolor lightblue;
 +
draw subpath(s,t) of p_circle withcolor backgroundblue;
 +
draw subpath(t,length p_circle) of p_circle withcolor lightblue;
% The dashed line
% The dashed line
Rad 119: Rad 129:
draw 2.5pt*(dir (-40+180))--Lx_lft*(dir (-40+180))
draw 2.5pt*(dir (-40+180))--Lx_lft*(dir (-40+180))
dashed evenly scaled 0.5;
dashed evenly scaled 0.5;
-
picture p_label;
+
%picture p_label;
-
p_label := thelabel.bot(btex lutning etex, origin);
+
%p_label := thelabel.bot(btex lutning etex, origin);
%draw p_label scaled 0.7 shifted ((R+5pt/dx)*dx*(dir -40)+(5pt,-3pt));
%draw p_label scaled 0.7 shifted ((R+5pt/dx)*dx*(dir -40)+(5pt,-3pt));
-
p_label := thelabel.bot(btex ${}=\tan (-40^{\circ})$ etex, origin);
+
%p_label := thelabel.bot(btex ${}=\tan (-40^{\circ})$ etex, origin);
%draw p_label scaled 0.7 shifted ((R+5pt/dx)*dx*(dir -40)+(-1pt,-10pt));
%draw p_label scaled 0.7 shifted ((R+5pt/dx)*dx*(dir -40)+(-1pt,-10pt));
Rad 143: Rad 153:
drawarrow endshy p_angle;
drawarrow endshy p_angle;
-
picture p_label;
+
draw p_label;
-
p_label := thelabel.lrt(btex $-40^{\circ}$ etex, origin);
+
-
draw p_label scaled 0.7 shifted (1.2*r*dx*(dir -5)+(-4pt,0));
+
% The point on the circle
% The point on the circle

Nuvarande version

Detta är en figur som används i teoriavsnitt 4.2 och är ritad i språket Metapost. Du kan redigera bilden genom att klicka på redigera-fliken.


[Image]

Den här artikeln är hämtad från http://wiki.math.se/wikis/2008/forberedandematte1/index.php/4.2_-_Figur_-_Enhetscirkeln_med_vinkeln_-40%C2%B0_och_linjen_med_riktningskoefficient_tan_-40%C2%B0