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abs(cc)/bb£ºÐéÄâͬÃæ»ý¾ØÐεĸß
(abs(cc)/bb)/bb = ÐéÄâͬÃæ»ý¾ØÐ뵀 ¸ß/µ×±ß³¤ = abs(cc)/bb^2
ÐéÄâͬÃæ»ý¾ØÐεĶԽÇÏßÓëµ×±ßµÄ¼Ð½Ç
tan(¡°¼Ð½Ç¡±) = abs(cc)/bb^2
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aaÊÇÏòÁ¿aÔÚÏòÁ¿bÉϵÄͶӰ³¤¶È(µ×±ß)
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% matlab
% ÏòÁ¿aºÍb
va = [sqrt(3),1,0]
vb = [sqrt(3),0,0]
% Á½ÏòÁ¿¶ÔÓ¦µÄƽÐÐËıßÐεÄÃæ»ý
cc = cross(va,vb)
% Á½ÏòÁ¿µÄ³¤
maga = sqrt(dot(va,va))
magb = sqrt(dot(vb,vb))
% ÏòÁ¿bÔÚÏòÁ¿aÉϵÄͶӰ³¤¶È
bb = dot(va,vb)/maga
% ÏòÁ¿aÔÚÏòÁ¿bÉϵÄͶӰ³¤¶È
aa = dot(va,vb)/magb
% ÐéÄâͬÃæ»ý¾ØÐεĸß
hb = abs(cc)/bb
ha = abs(cc)/aa
% ¼Ð½Ç
dthetb = atan(abs(cc)/bb^2)*180/pi
dtheta = atan(abs(cc)/aa^2)*180/pi
% ¼Ð½Ç
thet = acos(bb/magb)*180/pi |
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