For $$\vec{a} = a_x \hat{i} + a_y \hat{j} + a_z \hat{k}$$:
$$|\vec{a}| = \sqrt{a_x^2 + a_y^2 + a_z^2}$$
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CAT Formulas
Vector Algebra
Magnitude of a Vector
For $$\vec{a} = a_x \hat{i} + a_y \hat{j} + a_z \hat{k}$$:
$$|\vec{a}| = \sqrt{a_x^2 + a_y^2 + a_z^2}$$
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