# Q. $If\overrightarrow{a}=\hat{j}+\sqrt{3}\hat{k},\overrightarrow{b}=-\hat{j}+\sqrt{3}\hat{k}and\overrightarrow{c}=2\sqrt{3}\hat{k}$ form a triangle, then find out the internal angle of the triangle between $\overrightarrow{a}and\overrightarrow{b}$?

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