Which of the following is true about opposite vectors?

Two vectors having same magnitude and direction are called:

Two vectors ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ are inclined to each other at an angle θ. Which of the following is the unit vector perpendicular to both ${\rm{\vec A}}\,and\,{\rm{\vec B}}$ ?

Given ${\rm{\vec A}} = 4\hat i + 6\hat j\,and\,{\rm{\vec B}} = 2\hat i + 3\hat j$. Which of the following is correct?

If $\vec A.\vec B = \sqrt 3 \left| {\vec A imes \vec B} \right|$ then angle between $\vec A$ and $\vec B$ will be

The area of a parallelogram whose adjacent sides are given by vectors $\vec A = \hat i - 2\hat j + 3\hat k$ and $\vec B = 4\hat i + 5\hat j$ is

If ${\rm{\vec A}}\,and\,\overrightarrow B$ denote the sides of a parallelogram and its area is $\frac{1}{2}AB$(A and B are the magnitude of ${\rm{\vec A}}\,and\,\overrightarrow B$ respectively), the angle between ${\rm{\vec A}}\,and\,\overrightarrow B$ is

If vector $\u{A}$ is a non-zero vector, and $n$ is a scalar, then $n\u{A}$ is a null vector if:

$\overrightarrow A$ is a vector with magnitude A, then the unit vector $\widehat A$ in the direction of $\overrightarrow A$ is

If the magnitudes of scalar and vector products of two vectors and are 6 and $6\sqrt 3$ respectively, then the angle between two vectors is

If $\vec A.\vec B = \sqrt 3 \left| {\vec A imes \vec B} \right|$ then angle between $\vec A$ and $\vec B$ will be