Question

Airplane a is flying directly toward the airport which is 20 miles away. The pilot notices airplane b 45 degrees to her right. Airplane b is also flying directly to the airport. The pilot of airplane b calculates that airplane a is 50 degrees to his left. Based on that information, how far is airplane b from the airport

Answer 1

First, set up your equation:
$\frac{sin50}{20} = \frac{sin45}{x}$

Next, you cross multiply:
10$\sqrt{2}$ = sin50 x

Finally, isolate the variable to get your answer:
18.46 miles