Find Area of Polar Curve: Cos(6ǿ)

[gr3g1]

Hey guys,

I just wanted to know, if my polar curve is cos(6ǿ) and i have to find the length of one peddle... can i use the interval of 0 and Pi/12?

Thanks a lot!

 

[HallsofIvy]

One peddle? Oh! One "petal"! cosine goes from 0 to 0 between $\pi/2$ and [itex]\pi/2[/tex]. $6\theta= \pi/2$ when $\theta= \pi/12$.<br /> <br /> I would recommend using -$\pi/12$ to $\pi/12$. 0 to $\pi/12$ will only give half of a petal. Of course, if you are really clever, you could use 0 to $\pi/12$ and then multiply by 2.[/itex]

 

[gr3g1]

lol, sorry, i meant petal :P
Thanks a lot