Answer
$\cot$ 73$^{\circ}$ = $\tan$ 17$^{\circ}$
Work Step by Step
According to the Cofunction Identities
$\cot$ $A$ = $\tan$ (90$^{\circ}$ - $A$)
Therefore:
$\cot$ 73$^{\circ}$ = $\tan$ (90$^{\circ}$ - 73$^{\circ}$)
= $\tan$ 17$^{\circ}$
Therefore:
$\cot$ 73$^{\circ}$ = $\tan$ 17$^{\circ}$