17. All
18. B because it can be symmetrical either way
An argument is a variable, value or object passed to a function or method as input. Positional arguments are arguments that need to be included in the proper position or order
Answer:
1:3
Step-by-step explanation:
There are 3 adults per 1 child at the book fair. I think this is right but im not 100% sure :)
Sec is 1/cos so sec -120 is 1/cos -120 which is -2
