Find sin(a) in the triangle
In a right triangle the Sin of the angle is the opposite side over the hypotenuse = 12/37
here is a link mite help
https://revisionmaths.com/gcse-maths-revision/trigonometry/sin-cos-and-tan
SOH CAH TOA.
\(sin=\frac{opposite}{hypotenuse} \\ \\sin=\frac{12}{37}\)