2. The picture below shows a zoomed in version of the light emitted from the coin. Use trigonometry to relate hwater and sin (02). We are taking advantage of the small-angle approximation in this lab, so you can assume that sin (0) = tan (0). D h water X Fig 2: The light ray from the coin can be represented as the hypotenuse of a triangle, where hwateris the height of the coin below the water, and 'x is some parameter indicating the horizontal position of the coin. Here, we are introducing the variable 'x' to represent the horizontal position of the coin. It is not a variable that we will keep; we will be substituting it out later. For now, though, it is useful to keep so we can compare this triangle and a later triangle