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Janusz
办美国文凭加拿大文凭澳洲文凭英国文凭学位证毕业证成绩单
Veinas bọt EPE máy móc
Wendy Ye
Foot of perpendicular of a pt in a lineConsider the lines L_1:x-1=y-2=z and L_2:x-2=y=z-1 #jeemain
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2 weeks ago
Foot of perpendicular of a pt in a lineConsider the lines L_1:x-1=y-2=z and L_2:x-2=y=z-1 #jeemain
![HÌNH 7 [CƠ BẢN] CHỨNG MINH ĐƯỜNG THẲNG SONG SONG](http://i.ytimg.com/vi/4hYrsYZpapE/mqdefault.jpg "HÌNH 7 [CƠ BẢN] CHỨNG MINH ĐƯỜNG THẲNG SONG SONG")
