If $\theta$ is the angle between vectors a and b, and $|a\times b|=|a\cdot b|,$ then $\theta$ is equal to

Q. Let $\theta$ be the angle between two vectors $\overrightarrow{A}$ and $\overrightarrow{B}$ then $\frac{\hat{A}\times \hat{B}}{\hat{A}\cdot \hat{B}}$ is equal to :

Q. If θ is the angle between any two vectors and , then when θ isequal to (A) 0 (B) (C) (D) π

Q. The angle between the vectors $\overrightarrow{A}$ and $\overrightarrow{B}$ is $\theta$. The triple product $\overrightarrow{A}.(\overrightarrow{B}\times \overrightarrow{A})$ is equal to.

Q. If θ is the angle between two vectors $\overrightarrow{a}\mathrm{and}\overrightarrow{b},\mathrm{then}\overrightarrow{a}·\overrightarrow{b}\ge 0$ only when
(a) $0<\mathrm{\theta }<\frac{\mathrm{\pi }}{2}$

(b) $0\le \mathrm{\theta }\le \frac{\mathrm{\pi }}{2}$

(c) 0 < θ < π

(d) 0 ≤ θ ≤ π