MathematicsMedium202×since 2002Q5758a→ ,b→ ,c→\overrightarrow a \,,\overrightarrow b \,,\overrightarrow ca,b,c are 333 vectors, such that a→+b→+c→=0\overrightarrow a + \overrightarrow b + \overrightarrow c = 0a+b+c=0 , ∣a→∣=1 ∣b→∣=2, ∣c→∣=3,\left| {\overrightarrow a } \right| = 1\,\,\,\left| {\overrightarrow b } \right| = 2,\,\,\,\left| {\overrightarrow c } \right| = 3,a=1b=2,c=3,, then a→.b→+b→.c→+c→.a→{\overrightarrow a .\overrightarrow b + \overrightarrow b .\overrightarrow c + \overrightarrow c .\overrightarrow a }a.b+b.c+c.a is equal to :A111B000C−7-7−7D777Check answerSkip