What can 2tanx+cosx equal to an identity

Answer 1

There are many possible identities that 2tan(x) + cos(x) can be equal to. Here are a few examples:

1) 2tan(x) + cos(x) = sin(x)/cos(x) + cos(x) = (sin(x) + cos^2(x)) / cos(x)
2) 2tan(x) + cos(x) = (2sin(x)/cos(x)) + cos(x) = (2sin(x) + cos^2(x)) / cos(x)
3) 2tan(x) + cos(x) = (2sin(x) + cos^2(x)) / cos(x) = (2sin(x) + 1 - sin^2(x)) / cos(x)

These are just some possibilities, and the simplification of this expression will depend on the specific problem or context in which it is being used.