Answer
$-\sin{t}$;
$-\csc{t}$;
$-\tan{t}$;
odd
Work Step by Step
RECALL:
(1) $\sin{(-a)} =-\sin{a}$
(2) $\csc{(-a)} = -\csc{a}$
(3) $\tan{(-a)} = -\tan{a}$
(4) A function $f$ is odd if $f(-x) = -f(x)$.
Thus, using the rules listed above, the missing expressions in the given statements are ( in order) :
$-\sin{t}$;
$-\csc{t}$;
$-\tan{t}$;
odd