A, B, C, D, E are five coplanar points,then o | vedclass

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(B) Given that $A, B, C, D, E$ are five coplanar points.We need to evaluate the sum: $\overrightarrow{DA} + \overrightarrow{DB} + \overrightarrow{DC}

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$3\,\overrightarrow{DE}$

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(B) Given that $A, B, C, D, E$ are five coplanar points.We need to evaluate the sum: $\overrightarrow{DA} + \overrightarrow{DB} + \overrightarrow{DC} + \overrightarrow{AE} + \overrightarrow{BE} + \overrightarrow{CE}$.By using the triangle law of vector addition,we know that $\overrightarrow{PQ} + \overrightarrow{QR} = \overrightarrow{PR}$.Rearranging the terms in the given expression:$= (\overrightarrow{DA} + \overrightarrow{AE}) + (\overrightarrow{DB} + \overrightarrow{BE}) + (\overrightarrow{DC} + \overrightarrow{CE})$Applying the triangle law to each group:$= \overrightarrow{DE} + \overrightarrow{DE} + \overrightarrow{DE}$$= 3\,\overrightarrow{DE}$.

$A, B, C, D, E$ are five coplanar points,then $\overrightarrow{DA} + \overrightarrow{DB} + \overrightarrow{DC} + \overrightarrow{AE} + \overrightarrow{BE} + \overrightarrow{CE}$ is equal to

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