This is not at all what I do so please keep it simple. I'm looking for a true/false condition for a php program I'm working on.
The best way for me to describe the question is by example.
I'm given $2$ directions and $2$ angles like
$A=181$ with possible values $0$ to $360$
$x=5$ with possible values $0$ to $180$
What I'm looking for is $A+x \ge B \ge A-y $ which obvious doesn't work.
I'm developing a relationship between wind direction and crosswind conditions for aircraft and this just has me stumpted.
Thanks for the help...
Real world example Runway 350 DFW, my aircraft can handle 20 degrees cross wind from strait. The morning of my flight the briefer indicates winds at 050.True or false can I launch my aircraft?