What is the cross product of #[2, -5, 8] # and #[3, 7, 9]#?

1 Answer
Feb 5, 2016

Answer:

#veca x vecb=29i+6j+29k#

Explanation:

#"The cross product of two vector ," vec a and vec b " is given by:"#
#"i,j,k are unit vectors"#
#veca x vecb=i(a_jb_k-a_kb_j)-j(a_ib_k-a_kb_i)+k(a_ib_j-a_jb_i)#
#veca x vecb=i(2.7+3.5)-j(2.9-8.3)+k(2.7+3.5)#
#veca xvec b=i(29)-j(-6)+k(29)#
#veca x vecb=29i+6j+29k#