PLeaseeee help i have tried to solve this problem, but I cannot sold it.

Question

 If tan(α)=−5 , where 3π/2<α<2π and β is a Quadrant  II angle with  tan(β)=−1/2

, find

 tan(α+β)

 

Answer 1

Locate the formula for the tanget of the sum of two angles.

Answer 2

tan(α + β) = [tanα + tanβ] / {1 - tanαtanβ)

Plug in the given values and simplify.