Question

In a 2 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)

Answer 1

Answer:
The correct answer is dividing by cosine
Explanation:
The cosine function is
cos θ = ca / ​​H
done ca is the adjacent leg (x-axis) and H is the hypotenuse (vector module)
we clear
H = ca / ​​cos θ
therefore, to find the magnitude of the vector, the cathete is divided into the cosine.
The correct answer is dividing by cosine