Sastavljanje i rastavljanje vektora (na primjeru sile) - 4.

$F_R=F_1+F_{2}F\_\{R\}=F\_\{1\}+F\_\{2\}$

$F_R=F_1^2+F_2^{2}F\_\{R\}=F\_\{1\}^\{2\}+F\_\{2\}^\{2\}$

$F_R=\sqrt{F_1^2+F_2^2}F\_\{R\}=\backslash sqrt\{F\_\{1\}^\{2\}+F\_\{2\}^\{2\}\}$

$F_R^2=F_1+F_{2}F\_\{R\}^\{2\}=F\_\{1\}+F\_\{2\}$