Here, we are required to evaluate tan(sin^-1 (-4/5)).
tan(sin^-1 (-4/5)) = (-4/3)
Sin^-1 (-4/5) = θ
Therefore; ultimately Sin θ = (-4/5)
Since; Sine = opposite / hypothenus
Therefore, adj = √(5²) - (4²)
adj = 3.
However, since tan(sin^-1 (-4/5)) = tan θ
Therefore, tan θ = 4/3
However, since sin θ and tan θ are only negative in the fourth quarter;
Therefore, tan θ = (-4/3)
Read more: