The clues on the right are all regular crossword clues whose answers happen to end CO. The clues on the left are loose wordplay that describe what a hypothetical company with that name might do:
A | They are based in the Windy City. | CHI CO | '70s music genre | DISCO |
B | They consist of ones in France. | UNES CO | "127 Hours" star | FRANCO |
C | They criticize rudely. | DIS CO | African country | MOROCCO |
D | They do business one month a year. | MAR CO | Creole music genre | ZYDECO |
E | They focus on standardized test prep. | GRE CO | Famous trader's first name | MARCO |
F | They formed by juxtaposing Sky Airlines and Condor Flugdienst. | ZY DE CO | In the open air | AL FRESCO |
G | They help out professors. | TA CO | International gp. "building peace in the minds of men and women" | UNESCO |
H | They originally had a dumb name, so they changed a letter. | MOROC CO | Plaster | STUCCO |
I | They rearrange flares. | ALFRES CO | Popular Mexican street food | TACO |
J | They represent the guys of the Sunshine State. | FLA MEN CO | Spanish boy | CHICO |
K | They sound like they're not going anywhere. | STUC CO | Spanish music and dance style | FLAMENCO |
L | They were founded by two-thirds of a set of literary sisters. | BRON CO | Spanish painter, with "El" | GRECO |
M | They were inspired by a Latin boy and his donuts. | PUER TORI CO | United States territory | PUERTO RICO |
N | They were named after The Nanny. | FRAN CO | Wild horse | BRONCO |
Reading out the indicated letters of the indicated answers yields the clue phrase THEY COMPUTE COSINE OF T. The company that does this is COS T CO, or COSTCO.