Question

find the angle between the following pair of vector a= 4i+6j-3k and -2i-5j+7k​

Answer 1

Explanation:

4i+6j-3k= 0

-2i-5j+7k=0

4i+6j=3k

-2i-5j= -7k

2i+1j= -4

2i+1j+4 =0

( a=2,b=1,c=0)