F 50° 25° The force vector F shown above has a magnitude of 27 kip. Which of the following best represents the unit vector acting in the direction of F? a) uf = {0.583i - 0.272j + 0.766k} O b) uF =...

Extracted text: F 50° 25° The force vector F shown above has a magnitude of 27 kip. Which of the following best represents the unit vector acting in the direction of F? a) uf = {0.583i - 0.272j + 0.766k} O b) uF = {0.601i + 0.541j + 0.588k} c) uf = {0.541i + 0.601j - 0.588k} d) uf = {0.583i + 0.272j + 0.766k}