Question

Reciprocal Trigonometric Functions. question with image attached

Answer 1

The argument of the cosine doesn't change the maximal values,
it's always between 0 and 1, no matter what the argument is, right ?

Answer 2

from -1 to 1 actually , not from 0 to 1

Answer 3

right

Answer 4

so to find the period what do i do?

Answer 5

The argument just changes at which "pace" the cosine changes its values

A period is:
going through all values one time. Going the circle once.

Answer 6

The complete circle is 2 pi ?

Answer 7

idk. i dont understand any of this. i dont even know where to start

Answer 8

The definiton of period is doing the circle one time: