A) \[\frac{\pi }{6}\]
B) \[\frac{\pi }{4}\]
C) \[\frac{\pi }{3}\]
D) \[\frac{\pi }{2}\]
Correct Answer: C
Solution :
\[|\widehat{a}+\widehat{c}{{|}^{2}}=|\sqrt{3}\widehat{b}{{|}^{2}}\Rightarrow 1+1+2\cos \theta =3\], Where \[\theta =\]angle between\[\widehat{a}\]and\[\widehat{c}\], \[\Rightarrow \cos \theta =\frac{1}{2}\]. So,\[\theta =\frac{\pi }{3}\]You need to login to perform this action.
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