Also as to my initial line of thought, i do not have the incoming signal angle, which would help to solve the problem
with triangle formulas..
Just some food for thought 8), (not a solution for your current problem which has been addressed quite well by the previous post of johnwasser):
There is a technique to get an angle from an impact with 2 sensors using an... tada: artificial head. The mics are mounted in the ears. As the sound arrives at two different times, while one of them impacts directly you will have a slight phase shift from which you can determine a rough determination of angle (as long as you don't have sine sounds, which makes it complicate with high tones. Humans are quite good in this technique. the phase shift determination is done using autocorrelation functions, and this technique works also quite well in a noisy ambient.