Question

which of the following represents a unit vector​

Answer 1

Please provide an attachment for the question asked.

Answer 2

Answer:

Hope ur question is in the attachment

iˆ+jˆi^+j^

cosθiˆ−sinθjˆ

sinθiˆ+2cosθjˆ

1/√3(iˆ+jˆ)

(b) Unit vector has a magnitude equal to 1.

√cos2θ+sin2θ=1

∴ Opition (b ) is the correct answer