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The possible answers are 150 degrees, 30 degrees, 60 degrees, and 120 degrees...?

Hey I'm tryin to figure this one out!!

Oh ok...if you could help me I would greatly appreciate it!!

:) Sure thing. This is geomtry right? Or Algebra 2?

I think algebra 2...I'm in precal but shes going over several subject at one time...

Like an over view of algebra...

solve the equation. it will give you cosx=-1/2 --> x=120 degrees

cheers! only if i know it.

If not its ok...but thanks anyway!!!

normal to these lines?

can you find a line perpendicular to the given lines and passing through origin?

Ok...no?

in the first line it is m2*m1=-1

If its confusing you & you can't figure it out its ok....I'm just not that good in math lol

just tell me if you get the length of the normal. or i'll you refer you to a site.

Can you just refer me....because I'm really confused

Sorry...

feel free to back to me if any problem.

slope of a line=tano. so arctan[-(coefficient of x)/coefficient of y)] will give you the angle.

ok thanks!!!