Question

If a=i+j+k, b=2i+xj+k, c=i-j+4k and a(b.c)=70°, then x is equal to​

Answer 1

a A → a A a If a = i – 2 j+3k , b = 2i +3.j-k and —2. c = xj+j+(2x-1)} are coplanar vectors, then? is equal to |Online May 7, ... J it 4K (d) 41 + 4.J 4K. ... +2}-k and c=i-j-2k be three ...