^2 means squared.

solve

a^2 = 1 + 9 -3y -3y +y^2 - 2(1)(3-y)cos60

that would be sick of you answered it and told me how you did it, or just like showed your work.
(come on pit, be cool)
You should pay attention in class, and not "txt" your bff.
AMERICA
AMERICA
AMERICA
you appear to have more than one variable
i do,
and i dont have a cell lmao.
its just confusing cuz the (3-y) is messing me up.
You see the searchbar?

Its to find this: Maths thread

*Gave asshole answer as I don't know either...*
YellowGreenBlueRed

Quote by webbtje
You live in a ruler, the only child of trouser water (?); it's very fantastic, and salami!
7.35
I've Made You A Drawing of a Giraffe Fucking an Elephant. Notice How His Moustache Looks Just Like Mine.

Whu..

I'd help you, but I just had all my friends over for a trigonometry party. So I'm kind of burnt out on it, y'know.
AMERICA
AMERICA
AMERICA
any one at all???
come on , i no you all pasted grade 11
Quote by misfitsramones
i do,
and i dont have a cell lmao.
its just confusing cuz the (3-y) is messing me up.

just distribute the cos(60) and -2(1) into it
Quote by Victor Wooten
Frontbassman, You Win!
Also, Sig this or die!

^Yea you read right, Victor Wooten just gave me a complement.

Quote by kevin14u2nv

dude, in flames sucks.
all their music sounds the same

^ he listens to dragonforce
4-6y+y^2-2y(cos60)=a^2
a^2-4=-6y+y^2-2y(cos60)
(a^2-4)/2=-3y+(1/2y^2)-y(cos60)

I got that far but think I ****ed up the beginning, (I) can't get further without a value for one of the variables.
Quote by mynamesedson
I asked my son he said nothing but he just asked me he wants a psyachatrist (spelling?) Because he heard voices calling out his name. What a freak.

Igneuspentheism
Sorry mate, I cheated, lied, and raped my way through grade 11 and 12 maths. And I didn't even pass one of my grade 12 courses.
For a wounded man shall say to his assailant, "if I live I will kill you."
"If I die, you are forgiven."
Such is the rule of honour.
Quote by Frontbassman
just distribute the cos(60) and -2(1) into it

yeah.

i dont have a calculator or i'd do it. i dont remember the cos crap off the top of my head. i just did some algebra and got down to

a^2 = 16 + -4y + y^2 (cos60)

i saved the cos for last obviously. i just took a stab, probably didnt do it right, but i hope i got somewhere.

meh. i needed something to do.
Quote by humperdunk

So I just woke up sitting in my desk chair, with my bong on the desk in a bunch of little pieces and my hand super glued to my penis. Speculations as to what the hell just happened and how to unglue my hand from my member would be appreciated.
hold on im working it
Quote by Victor Wooten
Frontbassman, You Win!
Also, Sig this or die!

^Yea you read right, Victor Wooten just gave me a complement.

Quote by kevin14u2nv

dude, in flames sucks.
all their music sounds the same

^ he listens to dragonforce
Quote by misfitsramones
i think you might be right archetype00

he is
gj mate!
Quote by Victor Wooten
Frontbassman, You Win!
Also, Sig this or die!

^Yea you read right, Victor Wooten just gave me a complement.

Quote by kevin14u2nv

dude, in flames sucks.
all their music sounds the same

^ he listens to dragonforce
Quote by misfitsramones
i think you might be right archetype00

its just simple algebra then. just add like terms. this is what i did. i hope you can see the differences i just broke it down a bit.

a^2 = 1 + 9 + -3y + -3y + y^2 - 2(1) (3-y) (cos60)

a^2 = 10 + -3y + -3y + y^2 - 2(3-y) (cos60)

a^2 = 10 + -6y + y^2 + -2y(3-y) (cos60)

a^2 = 10 + -6y + y^2 + -6 + 2y (cos60)

a^2 = 16 + -4y + y^2 (cos60)

thats as far as i got

by the time i finished typing this, you probably have the answer tho.

EDIT-
i didnt think i was right hahaha. glad i could be of assistance. I havent even taken trig yet XD
Quote by humperdunk

So I just woke up sitting in my desk chair, with my bong on the desk in a bunch of little pieces and my hand super glued to my penis. Speculations as to what the hell just happened and how to unglue my hand from my member would be appreciated.
Quote by misfitsramones
any one at all???
come on , i no you all pasted grade 11

And I know you failed English class.
If Rock is a life-style, then Metal's an addiction

Yelloooow!

Of The

UG Challenge

Quote by LazyLatinoRocke
And I know you failed English class.

out of that entire statement, that's the only grammatical error you could find?
i know someone else who didn't pass english...
Quote by humperdunk

So I just woke up sitting in my desk chair, with my bong on the desk in a bunch of little pieces and my hand super glued to my penis. Speculations as to what the hell just happened and how to unglue my hand from my member would be appreciated.
Quote by misfitsramones
^2 means squared.

solve

a^2 = 1 + 9 -3y -3y +y^2 - 2(1)(3-y)cos60

that would be sick of you answered it and told me how you did it, or just like showed your work.
(come on pit, be cool)

a^2 = 1 + 9 -3y -3y +y^2 - 2(1)(3-y)cos60

a^2 = 10 - 6y + y^2 - (6 - 2y).cos60º

a^2 = 10 - 6y + y^2 - (6 - 2y).1/2

a^2 = 10 - 6y + y^2 - 3 + y

a^2 = y^2 - 5y + 7

y^2 - 5y + (7 - a^2) = 0

And use quadratic formula to solve for y if that's what you want ..