So it ask to evaluate tan(A-B)
Given:
TanA: -4/3
TAnB: -√8 (negative radical8)
So far I got
Tan A = Tan A - Tan B / 1+ tan A Tan B
Tan A= -4/3-(-√8/1) divided 1+(-4/3)(-√8/1)
Tan A= -4+3√8/3 divided by 3+4√8/3
So now I dived both -4+3√8/3 * 3/3+4√8
= -4+3√3/3-4√8
As my final answers