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AuthorTopic: Cant get brain working.....  (Read 857 times)

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Offline hairyasswelder

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Cant get brain working.....
« on: May 12, 2009, 18:24:13 »
Have a bit of a puzzle for the mathematical minded person

I need the lengths of b to c and a to c and just cant get my head in gear....... :oops: :oops:

I have used more than 1 method and confused myself...... :doh: :doh:



The numbers in the corners are degrees 8-[

Also no longer got a Zeus book  :-.
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Offline Mikieb1981

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Re: Cant get brain working.....
« Reply #1 on: May 12, 2009, 18:43:56 »
Calculate AC

                     Sin C = Opp/Hyp
                     Sin 42 = 3050/AC
                     AC = 3050/Sin 42
                     AC = 4558.15

Calculate BC

                    Tan A = Opp/Adj
                    Tan 48 = BC/3050
                    BC = Tan 48*3050
                    BC = 3387.37

Hope that helps

Oh and for future reference

http://en.wikipedia.org/wiki/Sine#Sine
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Offline hairyasswelder

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Re: Cant get brain working.....
« Reply #2 on: May 12, 2009, 19:43:02 »
Thanks Mikie  :clap:

Turns out I wasn't far off (witthin tolerances)  :D

Never thought of wikpedia  ;)

Thanks again

Steve
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Offline Mikieb1981

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Re: Cant get brain working.....
« Reply #3 on: May 12, 2009, 19:50:35 »
No worries

glad to help
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Offline muddyjames

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Re: Cant get brain working.....
« Reply #4 on: May 12, 2009, 21:48:47 »
looking at that makes me tremble in fear again. No, SERIOUSLY I AM!! I never ever thought / wanted to see triganometry ever again. Argh  :lol: :twisted:
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Offline TDi90

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Re: Cant get brain working.....
« Reply #5 on: May 13, 2009, 06:24:03 »
wooohooo triganometry  :twisted:
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Offline Skibum346

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Re: Cant get brain working.....
« Reply #6 on: May 13, 2009, 12:08:46 »
An even easier solution can be found here... if this has worked... there should be a "Triangle Solver"

http://www.poodwaddle.com/

However, I bow to the mathematical genius who can still use Sine, cosine & Tan rules... I used to be able to... but it's been a while...

**Checks calendar**

**Leafs through 29 calendars to find the last time he used them!**   :shock: :oops:
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Offline hairyasswelder

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Re: Cant get brain working.....
« Reply #7 on: May 13, 2009, 17:35:30 »
Quote from: muddyjames on May 12, 2009, 21:48:47
looking at that makes me tremble in fear again. No, SERIOUSLY I AM!! I never ever thought / wanted to see triganometry ever again. Argh  :lol: :twisted:

Dont make a outdoor staircase for a first floor flat ....... 3050 is the height of the door bottom and 42 degrees is the max steepness of the staircase by building regs  ;) and keeps the length BC to a minimum.
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Offline J.D.

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Re: Cant get brain working.....
« Reply #8 on: May 13, 2009, 18:51:52 »
Quote from: TDi90 on May 13, 2009, 06:24:03
wooohooo triganometry  :twisted:

Rob - go and see the doctor. There must be something wrong. :D :D :D
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Offline TDi90

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Re: Cant get brain working.....
« Reply #9 on: May 13, 2009, 21:44:25 »
Quote from: J.D. on May 13, 2009, 18:51:52
Quote from: TDi90 on May 13, 2009, 06:24:03
wooohooo triganometry  :twisted:

Rob - go and see the doctor. There must be something wrong. :D :D :D

LOL :) how you been? Send me pm ;)
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