Question

The resultant of the two vector is having magnitude $2$ and $3$ is $1$. What is their cross product

• A. $6$
• B. $3$
• C. $1$
• D. $0$

Answer 1

Answer: (D)

$0$

$\sqrt{2^2+3^2+2\times 2\times 3\times \cos \theta }=1$

By solving we get $\theta ={180}^o\therefore \overrightarrow{A}\times \overrightarrow{B}=0$