Maths Problem to do with Refraction?

Question

Ok here it is, you are looking down into a swimming pool. Your eyes are exactly 2 meters above the water which is exactly 1 meter deep. You are looking down at a 35 degree angle of depression. You can see a coin at this angle. What angle of depression is the coin at actually.

Answer 1

Without the refractive index of water, it cannot be solved. At least you must know how far are you from the coin along a horizontal line.

So dive in, pick up the coin and put it in the pocket!!!