Answer:
0.9
Step-by-step explanation:
C option is more reliable for measurement.
Answer:
x = 240 feet
Step-by-step explanation:
It is given that,
The angle of depression is 30 degrees from the bottom of the boat to a deep sea diver at the depth of 120 ft.
We need to find the distance x the diver must swim up to the boat. It can be calculate by applying trigonometry as follows :

So, the distance the diver must swim up to the boat is 240 feet.
It looks to be D but if you still need help I'd recommend checking out Desmos sure it is a graphing calculator but it may be easier to understand it with that.