Cosθ i + Sinθ j is a?
A. Vector
B. Position vector
C. Vector in the direction at angle θ with x-axis
D. Unit vector in the direction at angle θ with x-axis
Answer:D
Cosθ i + Sinθ j is a?
A. Vector B. Position vector C. Vector in the direction at angle θ with x-axis D. Unit vector in the direction at angle θ with x-axis