She was at 40 feet below, she swam up getting so she was then at 40-10 = 30 feet below sea level.
She the swan 4 feet down so she ended up at 30 + 4 = 34 feet below sea level.
The answer is 34 feet below sea level (-34)
Tan = opp/adj
Tan A = 16/12
I think it can be 605. I'm not sure exactly, but I think it is.
We need to see the image in order to help you
