यदि$|\mathop A\limits^ \to \times \mathop B\limits^ \to |\, = \,|\mathop A\limits^ \to \,.\,\mathop B\limits^ \to |,$ तो $\mathop A\limits^ \to $ तथा $\mathop B\limits^ \to $ के बीच कोण ........ $^o$ है
यदि$|\mathop A\limits^ \to \times \mathop B\limits^ \to |\, = \,|\mathop A\limits^ \to \,.\,\mathop B\limits^ \to |,$ तो $\mathop A\limits^ \to $ तथा $\mathop B\limits^ \to $ के बीच कोण ........ $^o$ है
$30$
$45$
$60$
$90$
यदि$|\mathop A\limits^ \to \times \mathop B\limits^ \to |\, = \,|\mathop A\limits^ \to \,.\,\mathop B\limits^ \to |,$ तो $\mathop A\limits^ \to $ तथा $\mathop B\limits^ \to $ के बीच कोण ........ $^o$ है
$|\mathop A\limits^ \to \times \mathop B\limits^ \to |\, = \mathop A\limits^ \to .\mathop B\limits^ \to $
$⇒$$AB\sin \theta = AB\cos \theta $
$⇒$$\tan \theta = 1$
$\theta = 45^\circ $
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