pickslides is absolutely correct!
A fisherman leaves his home port and heads in the direction N 70° W.
He travels 30 mi and reaches Egg Island.
he next day he sails N 10° E for 50 mi, reaching Forrest Island.
a) Find the distance between the fisherman's home port and Forrest Island.
b) Find the bearing from Forrest Island back to his home port.
| 10° * Q
| * 50 |
| * |
E o 100° |
| * 30 |
|70° * 70°|
| * |
The fisherman's port is
He sails 30 miles to Egg Island
Then he sails 50 miles to Forrest Island
. . Hence: .
Using the Law of Cosines on , we have:
Again, using the Law of Cosines:
The heading from to is: .