Question
Evaluate:$\int\frac{\cos\sqrt{\text{x}}}{\sqrt{\text{x}}}\text{dx}$
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$ \begin{vmatrix} \text{cos 15}^{0}& \text{sin 15}^{0} \\ \text{sin 75}^{0} & \text{cos 75}^{0} \\ \end{vmatrix}$.