Question

Show that the vectors i + 2j –2k is perpendicular or orthogonal to i + j - 2k​

Answer 1

Step-by-step explanation:

we know that vectors are perpendicular oe orthogonal when there dot product is zero.

(i+2j-2k).(i+j-2k)=1+2+4=7 which us not equal to zero.

implies that vectors are not perpendicular.