Question on a calm bright day youre scuba diving in a deep, Ask an Expert

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Question: On a calm, bright day, you're scuba diving in a deep lake (n = 1.35), 5.40 m away from your sailboat in the horizontal direction. When you are 2.20 m below the surface, the top of the sailboat mast appears to you to be in a direction 31.0Â° from vertical.

Question 1: Calculate the height of the mast.

I know the correct answer but explain how to get this answer!

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Category:- Physics
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