## Precalculus (6th Edition) Blitzer

The given statement shows that $3x=\frac{\pi }{4}+n\pi$. By using the transportation method, the value of x is computed as given below: \begin{align} & 3x=\frac{\pi }{4}+n\pi \\ & x=\frac{\pi +4n\pi }{4}\times \frac{1}{3} \\ & =\frac{\pi +4n\pi }{12} \end{align} But the value given in the case is $\frac{\pi }{12}+n\pi$. Thus, the given statement is false.