3-1.Vectors
medium

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

A

$30$

B

$45$

C

$60$

D

$90$

(AIIMS-2000)

Solution

(b) $|\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 $

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.