A vector A has a magnitude |A| and makes an angle$\theta$with respect to the y axis in a two-dimensional rectangular coordinate system. A_xis A) |A| sin $\theta$. B) |A| cos $\theta$. C) |A| tan$\theta$. D) none of the above.

Question

Quizplus · Accepted Answer

A_x is the component of vector A along the x-axis. Since the angle $\theta$ is with respect to the y-axis, A_x is given by |A| sin $\theta$.

A Vector a Has a Magnitude |A| and Makes an Angle