Use trig identities to change
\[ \frac{sec^3~\theta}{tan~\theta} \]
to
\[ sec~\theta~tan~\theta~+~csc~\theta \]

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.