Question

I have got a book and the general solution of cos x = 0 is given as as x=(2n-1)pi/2, is this correct? Pls reply. Thanks

Answer 1

pi/2, 3pi/2, 5pi/2, 7pi/2, ... Does it hit all of these for different values of n?

Answer 2

yes tkhunny you are right

Answer 3

now my question id\s that if u consider that cosx=0 then cosx=cosx(pi/2) then by formula cos x=2npi+-y which in that case would be 2npi+-pi/2. then for any of sign either positive or negative how will u get this solution given above