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  • In triangle ABC (Fig 10.18), which of the following is not true:

Q.18  In triangle ABC (Fig 10.18), which of the following is not true: 

A ) \overline{AB}+ \overline{BC}+ \overline{CA} = \vec 0 \\\\ B ) \overline{AB}+ \overline{BC}- \overline{AC} = \vec 0 \\\\ C ) \overline{AB}+ \overline{BC}- \overline{CA} = \vec 0 \\\\ D ) \overline{AB}- \overline{CB}+ \overline{CA} = \vec 0

Answers (1)

best_answer

From triangles law of addition we have,

\vec {AB}+\vec {BC}=\vec {AC}

From here 

\vec {AB}+\vec {BC}-\vec {AC}=0

also

\vec {AB}+\vec {BC}+\vec {CA}=0

Also

\vec {AB}-\vec {CB}+\vec {CA}=0

Hence options A,B and D are true SO,

Option C is False.

Posted by

Pankaj Sanodiya

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