Question

Show that vector a = i cap - j cap ÷ √2 is a unit vector.​

Answer 1

Answer:

a= i cap - j cap ÷ √2

modulus of a =

$\frac{ \sqrt{1 + 1} }{ \sqrt{2} } = \frac{ \sqrt{2} }{ \sqrt{2} } = 1$

It is unit vector