In a Two-Dimensional Cartesian System,the X-Component of a Vector Is

Multiple Choice

In a two-dimensional Cartesian system,the x-component of a vector is known,and the angle between vector and x-axis is known.Which operation is used to calculate the magnitude of the vector? (taken with respect to the x-component)

A) dividing by cosine
B) dividing by sine
C) multiplying by cosine
D) multiplying by sine