Question

Prove that (b×c)×a, (a×c)×b, (a×b)×c are coplanar

Answer 1

Answer:

use this identity

Step-by-step explanation:

plz follow me and thank me and brainlistv

Answer 2

Answer:

hence proved that (a*c)*a, (b*c)*a, (a*b)*c are coplanar

Step-by-step explanation:

The proof is given below. As we know, if the three vectors are coplanar then their scalar triple product equals to 0. Hence, a + b, b + c, c plus are coplanar. By reversing steps we can prove that if a + b, b + c, c plus are coplanar then a, b , c are coplanar

plz mark as the brainest