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Mathematics 16 Online
rebeccaxhawaii (rebeccaxhawaii):

Rae Jay come here

Hayhayz (hayhayz):

yay

rebeccaxhawaii (rebeccaxhawaii):

http://prntscr.com/b79xa1

satellite73 (satellite73):

this be an example lets look at the unit circle

satellite73 (satellite73):

satellite73 (satellite73):

take a look at the last page of the cheat sheet, the unit circle

rebeccaxhawaii (rebeccaxhawaii):

oui. that will come in handy.

rebeccaxhawaii (rebeccaxhawaii):

why the -1?

satellite73 (satellite73):

then find \(\pi\) on the unit circle the circumference of the unit circle is \(2\pi\) half the circumference is therefor \(\pi\)

satellite73 (satellite73):

|dw:1463971425313:dw|

satellite73 (satellite73):

better picture on the cheat sheet

rebeccaxhawaii (rebeccaxhawaii):

http://prntscr.com/b79yaj

satellite73 (satellite73):

yeah you got a cheat sheet too yours says some dumb stuff, but you can use it

rebeccaxhawaii (rebeccaxhawaii):

What do you mean "dumb stuff"? -_-

satellite73 (satellite73):

so what is \(\pi\) in this context? two things a) the arc length b) the angle they are the same since on the unit circle the arc length is the angle

satellite73 (satellite73):

lets forget about the dumb stuff your cheat sheet says, i will rant later

satellite73 (satellite73):

now don't forget this is the UNIT circle circle with center \((0,0)\) and radius 1

rebeccaxhawaii (rebeccaxhawaii):

rant in pm. dont judge my picture. he was nice to me for hw .-.

rebeccaxhawaii (rebeccaxhawaii):

Ok. so 180=pi

satellite73 (satellite73):

|dw:1463971614830:dw|

satellite73 (satellite73):

why \((1,0)\)? because the radius of the circle is 1 and the center is \((0,0)\) so you have gone one unit to the right, and have not gone up or down at all just the regular old rectangular coordinate \((1,0)\)

rebeccaxhawaii (rebeccaxhawaii):

cos=x and x=-1 ouiiiiii

satellite73 (satellite73):

now can you figure out where the \((-1,0)\) comes from on the left?

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