Saturday

December 20, 2014

December 20, 2014

Posted by **Adrianna** on Saturday, March 17, 2012 at 9:29pm.

A.650.66 miles

B.1,160 miles

C.1,301 miles

- Pre-Cal -
**Reiny**, Saturday, March 17, 2012 at 9:48pmUse the cosine law, I got 650.66

- Pre-Cal -
**Adrianna**, Saturday, March 17, 2012 at 9:51pmCan you tell me how you did it? I got 5 more questions like this one.

- Pre-Cal -
**Reiny**, Saturday, March 17, 2012 at 9:53pmare you not familar with the cosine law?

You must have learned this to be able to do this kind of question.

- Pre-Cal -
**Adrianna**, Saturday, March 17, 2012 at 9:58pmYes I am, but I don't understand it. I don't have a teacher to teach me. I do my work online, and I just need 2nd semester of pre-cal to graduate.

- Pre-Cal -
**Reiny**, Saturday, March 17, 2012 at 10:02pmx^2 = 420^2 + 400^2 - 2(420)(400)cos 105°

do the arithmetic

I got 105° from the difference between 150° and 45°

- Pre-Cal -
**Adrianna**, Saturday, March 17, 2012 at 10:07pmthanks

**Answer this Question**

**Related Questions**

physics - two airplanes leave an airport at the same time. the velocity of the ...

physics - Two airplanes leave an airport at the same time. The velocity of the ...

7th Grade Math - Write one or two equations to represent the situation below. ...

Help w/this one again(Math!!) - Write one or two equations to represent the ...

maths - If two planes leave the same airport at 1:00 PM, how many miles apart ...

trig - Two airplanes leave a airport at the same time , one going northwest ( ...

Physics - Two objects collide and bounce off one another. After the collision, ...

math - 13. If two planes leave the same airport at 1:00 PM, how many miles apart...

trig - An airplane flies with a speed of 425 mph and a heading of 63°. If the ...

Pre Calc - A plane (A) heading south at 120 mph and a plane (B) heading west at ...