A conic section whose focus is at the pole has the equation r=2/1+cosθ . Which of the following equations is the directrix of the conic?

rcosθ = -2
rcosθ = 2
rsinθ = -2
rsinθ = 2

I think its the second

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?