x = A sin â¡ ( Ï [ t â K ] ) + b , {\displaystyle x=A\sin(\omega [t-K])+b\ ,}. 1  A is the amplitude (or peak amplitude), 2  x is the oscillating variable, 3  Ï is angular frequency, 4  t is time, 5  K and b are arbitrary constants representing time and displacement offsets respectively.
Modeling agency. A modeling agency is a company that represents fashion models, to work for the fashion industry. These agencies earn their income via commission, usually from the deal they make with the model and or the head agency. The top agencies work with big-budget advertising agencies and fashion designers.
Before you get swept up in your potential modeling career, read the fine print on your contract. Marili Forastieri/Photodisc/Getty Images. It's such an exciting prospect. A modeling agency has elected to represent you or your child. Maybe it means work on runways, in print ads or even in TV commercials. But before your feet get too far off the ground, make sure you understand the contract you are offered.