Mathematics - Trigonometric Ratios & Identities Question with Solution | TestHub

The three factors are at least 2, 1, 2, respectively. Equality requires $|\cos x|=1,\tan 2y=0$, and $\sin 3z=-1$. Thus $x=m\pi ,y=n\pi /2$, and $z=(4p-1)\pi /6$ for integers $m,n,p$.