Need up to 30 seconds to load.

now the major important thing whenever

I'm talking about our clink paint goes

and so forth I automatically gonna have

this remembered s equals R times theta

say to yourself a couple times a night

when in the morning

and guess what you'll have it all

memorized when you're ready to take a

testing you only have to stress about it

s equals R times theta do we know what

SS in this case of X right or just

unknown right so I'm just gonna leave

that as s do mean order radiuses ya

radius is 3 meters so I'm gonna leave

that measurement inside there then theta

I do note that it's 30 seconds but what

I said is our theta must be in terms in

radians so I'm going to take 30 degrees

and multiply it by PI over 180 because

what we learned at the beginning of

class that's the way to rewrite that in

Radian form right so that gives you PI

over 6

ok cool so therefore that equals PI over

whoops sorry

so times pi over 6 so then when you

multiply this s equals 3 of our 6

reduces down to PI half's

meters right meters is still there

however ladies and gentlemen listen

listen the meters don't stay there this

is in radians which is in term because

it's in terms of pi but I want you guys

to think about something though if I was

gonna say the distance from here to

Santa would High School is I'm you know

I could say it in meters I could say it

in miles but I'm not going to use pi in

my answer right this is an example where

they're looking for a length we're not

going to want to approximate in terms of

pi what we're gonna want to do in this

case is actually figure out what is pi

divided by 21.57 and that's what I'm

going to approximate it so I'm gonna say

the arc length is approximate one point

five seven meters ok so again think

about the context of the problem if

we're looking at length of measurement

and meters we're not going to want to

use the approximation pi