Answer
$\tan{t}$;
$\cot{t}$
Work Step by Step
RECALL:
(1) $\tan{t} = \dfrac{\sin{t}}{\cos{t}}$
(2) $\cot{t} = \dfrac{\cos{t}}{\sin{t}}$
Thus, the missing expressions in the given statements are (in order):
$\tan{t}$;
$\cot{t}$