A triangle is always 180 degrees. We know that one side is 50 degrees and two of our sides are equal so we can be sure that the other side is 50 degrees this gets us to 100 degrees leaving 80 degrees this means x= 80
The vertex of the angle must stay the same so F must always be in the middle.
Therefore you have EFG
And GFE
The answer is 12.3 ft below sea level.
Because she is ascending (going up), 83.1 - 70.8 = 12.3 Ft
