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December 19, 2014

December 19, 2014

Posted by **Tareena-- check my answer please** on Saturday, May 24, 2008 at 4:39pm.

The angle between their flight paths is 75 degrees after three hours, how fart apart are they?

- Math -
**drwls**, Saturday, May 24, 2008 at 5:12pmI don't see your answer to check.

The law of cosines would work well on this problem. You know two sides (900 and 1260 km) and the included angle (75 deg) of a triangle.

- Math -
**Tareena-- check my answer please**, Saturday, May 24, 2008 at 5:29pmso it would be c^2=a^2+b^2-2ab cos C

900^2+1260^2-2(900)(1260)(cos75)

c^2=33542.9

c=183.14km

is it right?

- Math -
**Tareena-- drwls check my answer please**, Saturday, May 24, 2008 at 5:33pmthanks

- Math -
**drwls**, Sunday, May 25, 2008 at 1:08amNo. It isn't right. See my answer to your later post.

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