Two vectors and are such that and

PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

Two vectors

\mathbf{a}

and

\mathbf{b}

are such that

\mathbf{a}+\mathbf{b}=\mathbf{c}

and

a^2+b^2=c^2

. If

\theta

is the angle between the positive directions of

\mathbf{a}

and

\mathbf{b}

, then the correct statement is: (1)

\theta=\pi

(2)

\theta=\frac{2\pi}{3}

(3)

\theta=0

(4)

\theta=\frac{\pi}{2}

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