Question

a submersible traveling at a depth of 250 feet dives at an angle of 15 degrees with respect to a line parallel to the water's surface. it travels a horizontal distance of 1500 feet during the dive. what is the depth of the submersible after the dive

Answer 1

250+15=265+1500=1765 so that's your final answer 

Answer 2

The ratio of depth to horizontal distance is the tangent of the angle of depression.

250 +tan(15°)*1500 = 651.9 . . . . . feet