Incorrect. Draw $\displaystyle{{290}}^{\circ}\usepackage{cmbright}\Huge\$ in standard position. The terminal side lies in the fourth quadrant. To determine the correct sign of $\displaystyle{\cos{{\left({{290}}^{\circ}\right)}}}\usepackage{cmbright}\Huge\$ , use the signs of x and y in the fourth quadrant, remembering that $\displaystyle{\cos{\theta}}={x}\usepackage{cmbright}\Huge\$ .