How do you find the arc length? Explain the two methods learned in this section.

Question

anonymous · Answer

forget the "in this section" part. i just need two ways

hero · Answer

Two methods of finding arc length:

$$s = r\theta$$

s = arc length
r = radius

$$\frac{x}{360} = \frac{y}{2\pi r}$$

x = angle that spans arc length
y  = arc length

anonymous · Answer

you really ARE MY HERO!!!

anonymous · Answer

Um, i do have a small question

anonymous · Answer

ho do i type that? i cant copy and paste that

hero · Answer

How do you type it on another webpage...or how do you type it here?

hero · Answer

If you're trying to type it on another webpage...I can't help you.

anonymous · Answer

how would i type it into a text box... yah like, on another page

hero · Answer

You'll have to find a theta symbol online that you can copy.

hero · Answer

Hang on

hero · Answer

θ

hero · Answer

For fractions just use the slash symbol /

anonymous · Answer

thanks. and is that an 8 in frront of "=θr"

hero · Answer

an "es" 

S

hero · Answer

I'm pretty sure you've seen an "es" before. It is a letter of the alphabet.

hero · Answer

It comes after r and before t

hero · Answer

It's just a variable.

anonymous · Answer

s lol. ur the bomb man

hero · Answer

If you've never seen that formula before....

hero · Answer

maybe it's not what your teacher taught?

hero · Answer

By the way, when did school start?