- 1,178
- 407
Those are the current angular size formulas we use:
Angle: 2*atan(tan(70/2)*(object height/panel height))
Distance: object size*panel height/[object height*2tan(70/2)]
Size: 2tan(70/2)*distance*object height/panel height
These formulas are correct HOWEVER "tan(70/2)" means tangent of 35 degrees or ~~0.700 .
But if we input any of the folowing formulas in google it will calculate tangent of 35 radia or ~~0.474
If you're using google as a calculator you should input those formulas in the following form:
Angle: 2*atan(tan(70/2 deg)*(object height/panel height)) and so on
Now we need to recalc several hundreds feats...
Angle: 2*atan(tan(70/2)*(object height/panel height))
Distance: object size*panel height/[object height*2tan(70/2)]
Size: 2tan(70/2)*distance*object height/panel height
These formulas are correct HOWEVER "tan(70/2)" means tangent of 35 degrees or ~~0.700 .
But if we input any of the folowing formulas in google it will calculate tangent of 35 radia or ~~0.474
If you're using google as a calculator you should input those formulas in the following form:
Angle: 2*atan(tan(70/2 deg)*(object height/panel height)) and so on
Now we need to recalc several hundreds feats...