# Finding the length of a curve ??

• Oct 14th 2009, 11:54 PM
Khonics89
Finding the length of a curve ??
Consider one arch of y=sin(x) for 0 <= x <= pi

Write an integral whos value is the length of this curve ??

Ok this is my first time seeing a question where it asks to find the Length of a curve ??

so how do i begin ??
• Oct 14th 2009, 11:59 PM
mr fantastic
Quote:

Originally Posted by Khonics89
Consider one arch of y=sin(x) for 0 <= x <= pi

Write an integral whos value is the length of this curve ??

Ok this is my first time seeing a question where it asks to find the Length of a curve ??

so how do i begin ??

If you've been asked this question then you must have been taught the arclength formula. Go back and look in your class notes and/or textbook.
• Oct 15th 2009, 12:29 AM
Khonics89
hmm are you refering to L= R@ ??

this was in our past exam papers ???

the thing is- it said using integration ???
• Oct 15th 2009, 12:34 AM
mr fantastic
Quote:

Originally Posted by Khonics89
hmm are you refering to L= R@ ??

this was in our past exam papers ???

the thing is- it said using integration ???

Read this: Pauls Online Notes : Calculus II - Arc Length

(If you're not familiar with this formula I don't know why you're attempting the question you posted).