Step-by-step explanation:
we know that:
[tex]tan(x - y) = \frac{tanx - tany}{1 + tanx \times tany} [/tex]
using this, we can see that x = 73 and y = 13
using this, tan(x-y) = tan(73-13) = tan(60)
therefore, A = 60
we know that tan(60) = √3
therefore, B = 3
