The fun goes on and on

[halfdeadzombie]

In triangle LMN,

l=42, m=61, and m angleN=108. Find n to the nearest tenth.

I'm confused. Didnt they already give the mesure for angle N? or are they using n as a variable?

 

[galactus]

n is the length of a side, not an angle. N is the angle, n is the length.

n will be the side opposite angle N.

 

[halfdeadzombie]

O I see. So l,m, and n are sides, and N is the angle opposite side n. Am I suposed to use trig functions on this? It cant be a right triangle if angle N=180.

 

[galactus]

Here is a depiction of what your triangle could look like.


The angles are always opposite the sides. Use the law of cosines.

 

[halfdeadzombie]

We havent learned about that yet. What's the formula?

(better question, why do I have homework on somthing the teacher hasnt gone over?) but it fits.

 

[Denis]

We havent learned about that yet. What's the formula?
(better question, why do I have homework on somthing the teacher hasnt gone over?) but it fits.

Quit feeling sorry for yourself and do a http://www.google.com
search on "law of cosines" :evil:

 

[halfdeadzombie]

Really? Why don't you do one for maners?