in good agreement or in a good agreement?

[hanky]

Do we say "two things are in good agreement" or "two things are in a good agreement?
I always go with the former but today a guy say that it is the latter so I am in doubt.
Please advise.
Thanks.

 

[meee]

Do we say "two things are in good agreement" or "two things are in a good agreement?
I always go with the former but today a guy say that it is the latter so I am in doubt.
Please advise.
Thanks.

the first is correct

 

[bhaisahab]

Do we say "two things are in good agreement" or "two things are in a good agreement?
I always go with the former but today a guy say that it is the latter so I am in doubt.
Please advise.
Thanks.

Neither is good in English. What are you trying to say?

 

[meee]

if you look it up it states that in good agreement is correct, but in this case I doubt you can use it (give the context)

 

[hanky]

Neither is good in English. What are you trying to say?

Let say there are two theories and the consequences of the two match each other very well. I want to say that the first theory is in good agreement with the other so I say: the two theories are in good agreement.
So you said that it was not good in English, please help me improve it.
Thanks.

 

[2006]

the first is correct

I agree.

For example, there are two quite different ways of estimating the age of a very old painting. If the two differernt estimates are quite close, say 615 years and 590 years, we can say that the two different ways/estimates are in good agreement.

 

[bhaisahab]

Let say there are two theories and the consequences of the two match each other very well. I want to say that the first theory is in good agreement with the other so I say: the two theories are in good agreement.
So you said that it was not good in English, please help me improve it.
Thanks.

The context helps a lot (as always). I can see what you want to say now. I would say: "The two theories are in close agreement with each other".