If it comes in exam, then we can do it diagrammatically…since AC=5 units and radius of incircle is 1 unit…hence drawing tangents .we can take it to be right angle triangle.
But correct method I don’t know.
I think this is the only method…
If we go through formula then it will be very lenghty.
Yes there is a shortcut method.There will be certain constructions and one angle has to be taken as theta.then we have to solve I don’t know about this method correctly but it works.