If △=∣∣∣∣∣∣∣∣∣sinπcos(x+π4)tan(x−π4)sin(x−� – InterviewSolution

1.	If △=∣∣∣∣∣∣∣∣∣sinπcos(x+π4)tan(x−π4)sin(x−π4)0ln(xy)cot(x+π4)ln(yx)0∣∣∣∣∣∣∣∣∣, for x∈(0,π)−{π4,3π4},y>0. Then the value of (△+9)=
Answer» If $△ = ∣ ∣∣∣∣∣∣∣ ∣ \begin{matrix} sin π & cos (x + \frac{π}{4}) & tan (x - \frac{π}{4}) sin (x - \frac{π}{4}) & 0 & ln (\frac{x}{y}) cot (x + \frac{π}{4}) & ln (\frac{y}{x}) & 0 \end{matrix} ∣ ∣∣∣∣∣∣∣ ∣,$ for $x \in (0, π) - {\frac{π}{4}, \frac{3 π}{4}}, y > 0.$ Then the value of $(△ + 9) =$

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