Incorrect. The values of the trigonometric ratios are given by:
$\displaystyle\text{sine}=\frac{\text{opposite}}{\text{hypotenuse}}\usepackage{cmbright}\Huge\$ , $\displaystyle\text{cosine}=\frac{\text{adjacent}}{\text{hypotenuse}}\usepackage{cmbright}\Huge\$ , $\displaystyle\text{tangent}=\frac{\text{opposite}}{\text{adjacent}}\usepackage{cmbright}\Huge\$ ,
$\displaystyle\text{cosecant}=\frac{\text{hypotenuse}}{\text{opposite}}\usepackage{cmbright}\Huge\$ , $\displaystyle\text{secant}=\frac{\text{hypotenuse}}{\text{adjacent}}\usepackage{cmbright}\Huge\$ , $\displaystyle\text{cotangent}=\frac{\text{adjacent}}{\text{opposite}}\usepackage{cmbright}\Huge\$