Given:
[tex]tan\theta=-0.424[/tex]
Hence:
[tex]\theta=arctan(-0.424)=-\frac{383π}{3000}[/tex]
The angle must be in the fourth quadrant; so:
[tex]\theta=2π-\frac{383π}{3000}=1.872π[/tex]
Then:
ANSWER
[tex]\begin{gathered} sin1.872π=-0.39 \\ cos1.872π=0.92 \end{gathered}[/tex]
