Sunday

January 25, 2015

January 25, 2015

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.

**Answer this Question**

**Related Questions**

MATH - Two Planes leave an airport at the same time, one flying 300km/h and the ...

Math - Two Planes leave an airport at the same time, one flying 300km/h and the ...

Trig - Two planes leave an airport at the same time, one flying at 300 km/h and ...

MATH - Two planes leave an airport at the same time, one flying east, the other ...

Math - an air traffic controller spots two planes at the same altitude flying ...

Math - an air traffic controller spots two planes at the same altitude flying ...

11th grade-Math! - an air traffic controller spots two planes at the same ...

Precalculus - an air traffic controller spots two planes at the same altitude ...

math - Two planes depart from the same airport at the same time. One hour later ...

MATH 112 - two planes leave an airport at the same time. Their speeds are 320 ...