In a triangle \( ABC \), let \( AB = \sqrt{23} \), \( BC = 3 \) and \( CA = 4 \). Then the value of \( \dfrac{\cot A + \cot C}{\cot B} \) is _____.
6.
Consider a triangle \( PQR \) having sides of lengths \( p,q\) are \(r \) opposite to the angles \( P,Q \) and \( R \), respectively. Then which of the following statements is (are) TRUE?