Posted by **Anonymous** on Wednesday, April 2, 2014 at 6:18pm.

Help!

Ships A and B leave port at the same time and sail on straight paths making an angle of 60 degrees with each other. HOw far apart are the ships at the end of 1 hour if the speed of ship A is 25 km/h and that of ship B is 15 km/h?

- trig -
**Reiny**, Wednesday, April 2, 2014 at 7:18pm
after 1 hours, one ship has gone 25 km, the other 15 km

make a sketch, let the distance between them be x

straigh-forward case of the cosine law

x^2 = 25^2 + 15^2 - 2(25)(15)cos 60°

= ....

you do the arithmetic.

(I got appr 21.8 km)

- trig -
**Anonymous**, Wednesday, April 2, 2014 at 9:35pm
Thanks a lot.

## Answer This Question

## Related Questions

- Math - Two ships left the same port at the same time. One travelled at 16kn/h on...
- math - could someone show me how to write this or set up this equation?2 ships ...
- math - Two ships leave port at 4 p.m. One is headed N38°E and is travelling at ...
- AP Calculus - Two ships sail from the same port. The first ship leaves port at 1...
- Math - Two ships leave port at 4 p.m. One is headed N38°E and is travelling at ...
- trig - Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port ...
- math - an observer in a lighthouse 300 ft above sea level observes 2 ships ...
- Maths- calculus - Two ships leave different ports A and B 100 miles apart at ...
- geometry - Two ships leave a harbor at the same time, traveling on courses that ...
- 10th grade - Two ships leave a harbor at the same time, traveling on courses ...

More Related Questions