$($b$)$ Eliminate $x$ from the equations in part $($a$)$ to get one equation relating $,,z,$ and $m.$

Choose the correct equation below.

A$.\frac{tan}{z}=\frac{zm}{tan}$

B$.\frac{zm}{tan}=\frac{z}{tan}$

c$.\frac{z}{sin}=\frac{zm}{sin}$

D$.\frac{z}{tan}=\frac{zm}{tan}$

E$.\frac{z}{cot}=\frac{zm}{cot}$

F$.\frac{cot}{z}=\frac{zm}{cot}$

$($c$)$ Solve the equation from part $($b$)$ for $.$

$=arctan(\frac{ztan}{zm})$

$($d$)$ Solve the equation from part $($b$)$ for $.$

$0=$