In a ∆ABC, if cosAa+cosBb+cosCc=k a2+b2+c2, then k = ______________ – InterviewSolution

1.	In a ∆ABC, if cosAa+cosBb+cosCc=k a2+b2+c2, then k = ___________________.
Answer» In a ∆ABC, if $\frac{\cos A}{a} + \frac{\cos B}{b} + \frac{\cos C}{c} = k (a^{2} + b^{2} + c^{2}),$ then k = ___________________.

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