Question

Find k if the vectors i + 3j+k & ki + 2j +3k are perpendicular Vectors​

Answer 1

Step-by-step explanation:

let A=i+3j+k

B=ki+2j+3k

A is perpendicular to B

A.B=0

(i+3j+k).(ki+2j+3k)=0

k+6+9=0

k=-9