Results 1 to 3 of 3

Thread: Quick question

  1. October 13th 2008, 06:18 PM #1
    Flexible
    Flexible is offline
    Newbie
    Joined
    Oct 2008
    Posts
    21

    Quick question

    How do i solve this without a calc;

    Area=\frac{1}{2}\times\sqrt2\times\sqrt2\times(\fr ac{\sqrt2}{2})
    Follow Math Help Forum on Facebook and Google+
  2. October 13th 2008, 06:52 PM #2
    Flexible
    Flexible is offline
    Newbie
    Joined
    Oct 2008
    Posts
    21
    I'm having a problem when i can't cancel the -2 and the cosB, for example;

    From the cosine rule to find the area of a triangle:

    -2\times(x+1)\times(x-2)\times{Cos120}

    -2\times(x+1)\times(x-2)\times-\frac{1}{2}

    Here i can just cancel the -2 and -\frac{1}{2} as -2 \times 1 \times -\frac{1}{2} = 1

    The problem arises when i cant cancel these two components so what do i do? For example;

    Area=\frac{1}{2}\times5\sqrt3\times{10}\times(-\frac{\sqrt3}{2})
    Follow Math Help Forum on Facebook and Google+
  3. October 14th 2008, 02:21 AM #3
    Flexible
    Flexible is offline
    Newbie
    Joined
    Oct 2008
    Posts
    21
    anyone?
    Follow Math Help Forum on Facebook and Google+
« representation of term | arithmetic progression »

Similar Math Help Forum Discussions

  1. quick question
    Posted in the Calculus Forum
    Replies: 3
    Last Post: August 23rd 2009, 08:28 PM
  2. Quick question
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: September 30th 2008, 04:09 PM
  3. Quick question
    Posted in the Algebra Forum
    Replies: 2
    Last Post: March 13th 2008, 03:51 PM
  4. Quick Question - SPP, CPP, TSP
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: December 17th 2007, 08:49 PM
  5. Quick's quick question
    Posted in the Number Theory Forum
    Replies: 22
    Last Post: July 9th 2006, 04:38 PM

Search Tags


/mathhelpforum @mathhelpforum