Please help me with this question!!

Find the value of x for which the lines are parallel.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?