Question

Which of the functions have a range of all real numbers? Check all that apply.
A. y = sec x
B. y = csc x
C. y = tan x
D. y = cot x

Answer 1

just by memory; i recall that tan looks like x^3

Answer 2

and cot is just a reflection of it sort of lol

Answer 3

sec and csc ride on the humpbacks of sin and cos so they dont count

Answer 4

tan x and cot x have the range of all real numbers

Answer 5

each of them has vertical asymptotes and that's why

Answer 6

thanks