Question

The correct equation for the x component of a vector named A with an angle measured from the x axis would be which of the following?

Question 2 options:

Asinθ


Acosθ


Atanθ


A/sinθ

Answer 1

Answer: $A\cos \theta$

Explanation:

Given

Suppose A is the magnitude of vector

Then vector can be resolved in two components namely sin and cos

Vector along x axis is given by

$\cos \theta =\frac{\text{x-axis component}}{A}$

x-axis component$=A\cos \theta$