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Mathematics for IGCSE & O level - Vectors (Section 1 - No. 25)

In a triangle, let \(\vec{AB} = \vec{p}\) and \(\vec{BC} = \vec{q}\). What is \(\vec{CA}\)?
\(\vec{p} + \vec{q}\)
\(-\vec{p} - \vec{q}\)
\(\vec{q} - \vec{p}\)
\(\vec{p} - \vec{q}\)

توضيح

CA = -AC = - (AB+BC) = - (p+q)

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