That point is about 1/2". Thought the question was how far from the base does the first point branch?
Correct about that, and the brow tine is well inside the legal limit.
The other part of the question/requirement to be legal here is Washington's definition of a countable point.
That is any "point" that is 1" or longer is considered a countable point under the law, so if it were to be 1" or longer, then as Washington currently define it, that would be a two point, not counting the brow tine.
Since it appears to be well under 1" in your follow-up picture, it would be okay, but how easy would that be to determine in a hunting situation with the live bull standing there at pretty much any hunting range?