Refraction - help with Snells law of refraction

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Snell's Law of refraction is expressed as n1sin(θ1) = n2sin(θ2), where n represents the refractive indices of the two media and θ represents the angles of incidence and refraction. The confusion arises in determining which angle and refractive index correspond to each medium. To clarify, assign n1 and θ1 to the first medium and n2 and θ2 to the second medium. This systematic approach ensures proper application of the formula. Understanding this relationship is key to solving problems involving refraction.
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Homework Statement


Snells Law of refraction



Homework Equations





The Attempt at a Solution


n1sinx=n2sinx is an extremely easy equation but i get confused as to which sinx to put my n's to and viseversa. can someone explain to me please?!
 
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