Diketahui dua titik $begin mathsize 14px style straight A left parenthesis 1 comma space 2 right parenthesis space dan space straight B left parenthesis 6 comma space 5 right parenthesis end style$ .

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell top enclose B A end enclose end cell equals cell A with rightwards arrow on top minus B with rightwards arrow on top end cell row blank equals cell open parentheses 1 comma space 2 close parentheses minus open parentheses 6 comma space 5 close parentheses end cell row blank equals cell left parenthesis 1 minus 6 comma space 2 minus 5 right parenthesis end cell row blank equals cell left parenthesis negative 5 comma space minus 3 right parenthesis end cell end table end style$

Sehingga:

$begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open vertical bar stack B A with bar on top close vertical bar end cell equals cell square root of open parentheses negative 5 close parentheses squared plus open parentheses negative 3 close parentheses squared end root end cell row blank equals cell square root of 25 plus 9 end root end cell row blank equals cell square root of 34 end cell end table end style$

Jadi, $begin mathsize 14px style bottom enclose begin bold style vertical line top enclose B A end enclose vertical line end style bold equals square root of bold 34 end enclose end style$ satuan panjang.

Jika diketahui , maka tentukanlah! Maka vektor ....

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