Which of the following expressions gives the x-component of a vector of magnitude…

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Which of the following expressions gives the x-component of a vector of magnitude

A

that makes an angle

\theta

with the positive x-axis in the x–y plane? (a)

A\sin\theta

(b)

A\cos\theta

(c)

\dfrac{A}{\cos\theta}

(d)

-A\cos\theta