Question Number 9970 by Tawakalitu ayo mi last updated on 19/Jan/17
Answered by mrW1 last updated on 19/Jan/17
$${the}\:{result}\:{is}\:{a}\:{zero}\:{vector}\:{or}\:{null}\:{vector}\:\left(\overset{\rightarrow} {\mathrm{0}}\right). \\ $$$${a}\:{zero}\:{or}\:{null}\:{vector}\:{has}\:{no}\:{magnitude}. \\ $$
Commented by Tawakalitu ayo mi last updated on 19/Jan/17
$$\mathrm{please}\:\mathrm{workings} \\ $$
Commented by mrW1 last updated on 19/Jan/17
$$\overset{\rightarrow} {{BC}}+\overset{\rightarrow} {{CA}}=\overset{\rightarrow} {{BA}}=−\overset{\rightarrow} {{AB}} \\ $$$$\overset{\rightarrow} {{BC}}+\overset{\rightarrow} {{CA}}+\overset{\rightarrow} {{AB}}=−\overset{\rightarrow} {{AB}}+\overset{\rightarrow} {{AB}}=\overset{\rightarrow} {\mathrm{0}} \\ $$
Commented by Tawakalitu ayo mi last updated on 19/Jan/17
$$\mathrm{God}\:\mathrm{bless}\:\mathrm{you}\:\mathrm{sir}. \\ $$