Answer:
TanФ=-1.793
Step-by-step explanation:
[tex]Sin^{2} (A) + Cos^{2} (A) = 1[/tex]
[tex]Sin(A)=\sqrt{1-Cos^{2} (A)}[/tex]
[tex]Tan(A) = \frac{Sin(A)}{Cos(A)}[/tex]
[tex]Tan(A) =\frac{\sqrt{1-Cos^{2}(A) } }{Cos(A)} \\Tan(A) =\frac{\sqrt{1-(-.487)^{2} } }{-.487}=-1.793433202[/tex]
