Alright, so, i think i get everything in the chapter on light and reflection/refraction. But, one question gets me. I think its because im not understanding the question correctly, but ive tried working backwards and i still dont get the right answer. ok here it is:

To a submerged diver looking upward through the water, the altitude of the Sun (the angle between the Sun and the horizon) appears to be 45* (*=degrees). The actual altitude of the Sun is greater than, less than, or equal to 45*? explain. and lastly, What is the Sun's actual altitude?

Thanks in advance

i need help on this one...