Math Help Forum: Working with angles

1) It is 4.7km from Lighthouse A to Port B. The bearing of the port from the lighthouse is N73 degrees E. A ship has sailed due west from the port and its bearing from the lighthouse is N31 degrees E. How far has the ship sailed from the port? Round to the nearest tenth.

2) Points A and B are on opposite sides of a lake. Point C is 97.4 meters from A. The measure of angle BAC is 76 degrees 40', and the measure of angle ACB is determined to be 34 degrees 30'. Find the distance between points A and B (to the nearest meter)

Need help in explanation... be as detailed as possible. Thanks

Originally Posted by user001

1) It is 4.7km from Lighthouse A to Port B. The bearing of the port from the lighthouse is N73 degrees E. A ship has sailed due west from the port and its bearing from the lighthouse is N31 degrees E. How far has the ship sailed from the port? Round to the nearest tenth.

2) Points A and B are on opposite sides of a lake. Point C is 97.4 meters from A. The measure of angle BAC is 76 degrees 40', and the measure of angle ACB is determined to be 34 degrees 30'. Find the distance between points A and B (to the nearest meter)

Need help in explanation... be as detailed as possible. Thanks

What have you done to complete any one of these problems?

Originally Posted by skeeter

What have you done to complete any one of these problems?

For most I've set up a triangle and labeled each side/angle with the given information, then use the Law of Sine to find the missing parts... but my answers are always incorrect according to "mymathlab".

Originally Posted by user001

For most I've set up a triangle and labeled each side/angle with the given information, then use the Law of Sine to find the missing parts... but my answers are always incorrect according to "mymathlab".

can't tell what you've done wrong if you don't show anything ...