KoreanSAT / data /json /2024 /math_25_geom.txt
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25. 두 벑터 $\vec{a}$, $\vec{b}$ 에 λŒ€ν•˜μ—¬
\[
|\vec{a}| = \sqrt{11}, \quad |\vec{b}| = 3, \quad |2\vec{a} - \vec{b}| = \sqrt{17}
\]
일 λ•Œ, $|\vec{a} - \vec{b}|$ 의 값은? [3점]
\begin{itemize}
\item[1] $\frac{\sqrt{2}}{2}$
\item[2] $\sqrt{2}$
\item[3] $\frac{3\sqrt{2}}{2}$
\item[4] $2\sqrt{2}$
\item[5] $\frac{5\sqrt{2}}{2}$
\end{itemize}