seems that he has some typo.
\hspace{-16}$Find all Real ordered pairs $\bf{(x,y,z)}$ in $\bf{\tan^2(x)+\cot^2(y)+\csc^2(z)=\frac{1}{2}}$
-
UP 0 DOWN 0 0 2
\hspace{-16}$Find all Real ordered pairs $\bf{(x,y,z)}$ in $\bf{\tan^2(x)+\cot^2(y)+\csc^2(z)=\frac{1}{2}}$