A searchlight on a yacht is being used at night to illuminate a sunken chest lf the deep of water 3.3 m and the distnace between normal line and chest is =2 m. At what angle of incidence o should the light be aimed?

A searchlight on a yacht is being used at night to illuminate a sunken chest lf the deep of water 3.3 m and the distnace between normal line and chest is =2 m. At what angle of incidence o should the light be aimed?

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