Mathematics for IGCSE & O level - Vectors (Section 1 - No. 36)
In the parallelogram ABCD, which of the following is correct?
\(\vec{AB} + \vec{BC} = \vec{DA}\)
\(\vec{AB} + \vec{BC} = \vec{AC}\)
\(\vec{AB} - \vec{BC} = \vec{AC}\)
\(\vec{AB} + \vec{DA} = \vec{AC}\)
คำอธิบาย
By the triangle rule, AB + BC = AC.