At a certain time, the angle of depression to the shoreline from an airplane flying over Lake Winnipeg is 15°. If the airplane is flying at an altitude of 7000m, how much farther does it have to fly in a direct path before it is over land? Make your
answer correct to the nearest metre.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

X=-4  is the answer i think