Question

Which expression is equivalent to sec(–θ)?

sec θ
-sec θ
1−cosθ
csc θ

Answer 1

@Truste315

Answer 2

@563blackghost

Answer 3

@nevermind_justschool

Answer 4

help please

Answer 5

i got it let me just tyoe it out

Answer 6

i can't do the sign so i inputted 0

Answer 7

You're probably looking for sec 0, because you can "take out" the negative sign because sec0= 1/cos 0, and cosine is positive in both the quadrants | and |V, so any negative cosine is equivalent to the cosine <additive inverse> of that number. @jacklem