When vec A.vec B = - |A||B|, then | vedclass

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Question

(c) $\overrightarrow A .\overrightarrow B = AB\cos 	heta $

In the problem $\overrightarrow A .\overrightarrow B = - AB$ i.e. $\cos 	heta = - 1$

Vedclass · Accepted Answer

$\vec A$ and $\vec B$ act in the opposite direction

Vedclass · Answer

(c) $\overrightarrow A .\overrightarrow B = AB\cos 	heta $

In the problem $\overrightarrow A .\overrightarrow B = - AB$ i.e. $\cos 	heta = - 1$

$	heta = 180^\circ $

i.e. $\overrightarrow A $ and $\overrightarrow B $ acts in the opposite direction.

When $\vec A.\vec B = - |A||B|,$ then

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