Rae Jay come here
yay
this be an example lets look at the unit circle
take a look at the last page of the cheat sheet, the unit circle
oui. that will come in handy.
why the -1?
then find \(\pi\) on the unit circle the circumference of the unit circle is \(2\pi\) half the circumference is therefor \(\pi\)
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better picture on the cheat sheet
yeah you got a cheat sheet too yours says some dumb stuff, but you can use it
What do you mean "dumb stuff"? -_-
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
lets forget about the dumb stuff your cheat sheet says, i will rant later
now don't forget this is the UNIT circle circle with center \((0,0)\) and radius 1
rant in pm. dont judge my picture. he was nice to me for hw .-.
Ok. so 180=pi
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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 \((1,0)\)
cos=x and x=-1 ouiiiiii
now can you figure out where the \((-1,0)\) comes from on the left?
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