AB(-4;2;5)
AC(0;4;8)
BD = | ABxAC | / | AC | =
√(4^2+32^2+16^2)/√(4^2+8^2)=
36/ 4√5= 9/√5
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AB(-4;2;5)
AC(0;4;8)
BD = | ABxAC | / | AC | =
√(4^2+32^2+16^2)/√(4^2+8^2)=
36/ 4√5= 9/√5