Q4 of 51 Page 26

Show that each of the following triads of vectors is coplanar :

Formula : –




(iii)Three vectors a ⃗,b ⃗, and c ⃗are coplanar if and only if



Given: -



we know that three vector are coplanar if their scalar triple product is zero



we have



using



= 1(10 – 42) – 2(15 – 35) – 1(18 – 10)


= 0.


Hence, the Given vector are coplanar.


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