In ∆PQR, the measure of

The trigonometric ratio sin(θ) which applies to right triangles, is given by
[tex]\sin (\theta)=\frac{\text{opposite side}}{\text{hypotenuse}}[/tex]Graphically,
Therefore, the ratio that represents the sine of angle P is
[tex]\sin (P)=\frac{45}{53}[/tex]