Results 1 to 5 of 5

Math Help - Differentiating a formula for area of polygons

  1. #1
    Newbie
    Joined
    Aug 2009
    Posts
    1

    Differentiating a formula for area of polygons

    Hi guys

    Could someone please tell me how to differentiating this particular formula with step by step directions?

    A=(22500/n)/tan(Pi/n))

    Thanks in advance. As soon as possible if you can
    Last edited by Delos; August 18th 2009 at 08:34 AM. Reason: Forgot to simplify tehe...
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Jul 2009
    Posts
    397
    Hi Delos

    A=\frac{\frac{22500}{n}}{\tan (\frac{\pi}{4})}

    A=\frac{22500}{n\; \tan (\frac{\pi}{4})}

    Can you differentiate n\; \tan (\frac{\pi}{4}) ?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by Delos View Post
    Hi guys

    Could someone please tell me how to differentiating this particular formula with step by step directions?

    A=(22500/n)/\tan(\pi/n))

    Thanks in advance. As soon as possible if you can
    You can't differentiate a function of a discrete variable (number of sides).

    CB
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by songoku View Post
    Hi Delos

    A=\frac{\frac{22500}{n}}{\tan (\frac{\pi}{4})}

    A=\frac{22500}{n\; \tan (\frac{\pi}{4})}

    Can you differentiate n\; \tan (\frac{\pi}{4}) ?
    That is not the area formula.

    CB
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Senior Member
    Joined
    Jul 2009
    Posts
    397
    Hi CaptainBlack

    Sorry for not realizing it and thx for correcting my mistake
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Finding the perimeter and area of polygons
    Posted in the Geometry Forum
    Replies: 5
    Last Post: January 12th 2010, 04:49 PM
  2. Replies: 4
    Last Post: April 28th 2008, 07:20 AM
  3. Area of Regular Polygons
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: April 22nd 2008, 01:40 PM
  4. Differentiating area for physics...
    Posted in the Calculus Forum
    Replies: 3
    Last Post: September 27th 2007, 05:22 AM
  5. Area Of Regular Polygons
    Posted in the Geometry Forum
    Replies: 4
    Last Post: January 7th 2007, 09:42 AM

Search Tags


/mathhelpforum @mathhelpforum