If the vectors $\bar{a}, \bar{b}, \bar{c}$ satisfy the condition $|\bar{a}-\bar{c}|=|\bar{b}-\bar{c}|$, then…

If the vectors $\bar{a}, \bar{b}, \bar{c}$ satisfy the condition $|\bar{a}-\bar{c}|=|\bar{b}-\bar{c}|$, then $(\bar{b}-\bar{a}) \cdot\left(\bar{c}-\frac{\bar{a}+\bar{b}}{2}\right)=$
  1. $0$
  2. $-1$
  3. $1$
  4. $2$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (25 Apr Shift 2)

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