If a navigation error puts a plane 2 degrees off course, how far off course is the plane after flying 121 miles? Round to the nearest tenth of a mile.

Just explain how to solve, please.

2 answers

Please
Just draw a diagram (right triangle). The true course is one leg, and the actual course is the hypotenuse. The error is the other leg. So, with an hypotenuse of 121,

error/121 = sin 2°