Question

Angle Theta has a terminal side located in quadrant 4 of the coordinate plane and sign of data equals negative 8 / 17 what is cosine of theta

Answer 1

$\begin{gathered} \sin (\theta)=\frac{-8}{17} \\ \theta=\sin ^{-1}\frac{-8}{17} \\ \theta=-28 \\ As\text{ negative angle} \\ \theta=360+(-28) \\ \theta=332 \\ \cos (332)=\frac{15}{17} \\ \text{The }\cos (332)is\frac{15}{17} \end{gathered}$