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Help me calculate length when i know angles?

  • 16-05-2014 12:08am
    #1
    Closed Accounts Posts: 5,219 ✭✭✭


    Can someone help me to calculate the the length of 2 sides of a triangle when i know the angles and one of the lengths.

    Say the triangle in link below is 35 degrees at angle B, Angle A and C are 72.5 degrees and i know the length of the bottom of the triangle is 4 meters. What are the other 2 lengths. http://www.mathplanet.com/education/...etry/triangles

    I put this in AH because of the traffic it gets. If it gets shut down can someone please PM me the answer as i need those lengths urgently to calculate how much wood i need for a job tomorrow.


Comments

  • Closed Accounts Posts: 3,336 ✭✭✭wendell borton


    SOH CAH TOA


  • Registered Users, Registered Users 2 Posts: 4,632 ✭✭✭Aint Eazy Being Cheezy


    Should be at a 45° angle, and you need at least 6" to hit the spot.


  • Registered Users, Registered Users 2 Posts: 5,147 ✭✭✭PizzamanIRL


    Suck a toe.


  • Registered Users, Registered Users 2 Posts: 16,250 ✭✭✭✭Iwasfrozen


    woodoo wrote: »
    Can someone help me to calculate the the length of 2 sides of a triangle when i know the angles and one of the lengths.

    Say the triangle in link below is 35 degrees at angle B, Angle A and C are 72.5 degrees and i know the length of the bottom of the triangle is 4 meters. What are the other 2 lengths. http://www.mathplanet.com/education/...etry/triangles

    I put this in AH because of the traffic it gets. If it gets shut down can someone please PM me the answer as i need those lengths urgently to calculate how much wood i need for a job tomorrow.
    The link isn't working, what two angles is the 4 meters length between?


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    I know i will have the usual AH jokes and wind ups to put up with here but all i need is one kind person with a knowledge of maths to help solve the problem.


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  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    http://www.mathplanet.com/education/pre-algebra/introducing-geometry/triangles

    Angle at B = 35 degrees
    Angle at A and C are both 72.5 degrees
    The length of bottom of triangle is 4 metres.

    What are the other 2 lengths?


  • Registered Users, Registered Users 2 Posts: 44,080 ✭✭✭✭Micky Dolenz


    42


  • Closed Accounts Posts: 1,337 ✭✭✭Wishiwasa Littlebitaller




  • Registered Users, Registered Users 2 Posts: 44,080 ✭✭✭✭Micky Dolenz


    woodoo wrote: »
    how much wood i need for a job tomorrow.


    Sounds like a job for Daddy.


  • Registered Users, Registered Users 2 Posts: 9,459 ✭✭✭Chucken


    Always....42


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  • Registered Users, Registered Users 2 Posts: 20,592 ✭✭✭✭kneemos


    It's never long enough.


  • Registered Users, Registered Users 2 Posts: 22,412 ✭✭✭✭endacl


    woodoo wrote: »
    I know i will have the usual AH jokes and wind ups to put up with here but all i need is one kind person with a knowledge of maths to help solve the problem.
    The square on the hippy's pot of mousse is equal to some of the squares on the other two something or other.

    Hope this helps.


  • Closed Accounts Posts: 6,720 ✭✭✭Sir Arthur Daley


    I know my angle in relation to my length.


  • Posts: 0 [Deleted User]


    Clearly you are looking for the optimal position to place your girlfriend - and how she will view your length given the angle she is viewing from.

    Just below and slightly behind is probably the best angle as it affords you most of the length of the shaft, while appealing the the average depth perception of the average human.

    Your chances of keeping up this charade however are minimal. You are better of just waving it in her face and declaring such cliches as "the best things come in small packages" or "the smallest oranges are always the juiciest".


  • Registered Users, Registered Users 2 Posts: 1,674 ✭✭✭aaabbbb


    Use pythagoras maybe ?

    Its far too late for me to do any sort of math


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    I'm going to email Ruairi Quinn a link to this thread and let him see how much work he has to do.


  • Registered Users, Registered Users 2 Posts: 22,656 ✭✭✭✭Tokyo


    6.65 will be the length of the other two sides...


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    aaabbbb wrote: »
    Use pythagoras maybe ?

    Its far too late for me to do any sort of math

    I think i would need a triangle with a 90 degree in it to use pythagoras.


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    mike_ie wrote: »
    6.65 will be the length of the other two sides...

    Is that the total of the other two sides of just the length of each.


  • Registered Users, Registered Users 2 Posts: 44,080 ✭✭✭✭Micky Dolenz


    woodoo wrote: »
    Is that the total of the other two sides of just the length of each.

    Man, you remind me of an ex girlfriend. It is what it is :(


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  • Registered Users, Registered Users 2 Posts: 14,136 ✭✭✭✭Rayne Wooney


    woodoo wrote: »
    I think i would need a triangle with a 90 degree in it to use pythagoras.


    Draw a line through the middle and half the big triangle into two smaller ones

    Now you have two small ones with 90 degree angles and you know the lines at the bottom


  • Registered Users, Registered Users 2 Posts: 22,412 ✭✭✭✭endacl


    Did you miss the helpful link earlier in the thread op?

    :pac:


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    Man, you remind me of an ex girlfriend. It is what it is :(

    Bedtime micky you are getting cranky.


  • Registered Users, Registered Users 2 Posts: 9,459 ✭✭✭Chucken


    The square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

    -Some Greek guy who liked maths


  • Registered Users, Registered Users 2 Posts: 22,656 ✭✭✭✭Tokyo


    woodoo wrote: »
    Is that the total of the other two sides of just the length of each.


    the length of each.


  • Closed Accounts Posts: 5,219 ✭✭✭woodoo


    Draw a line through the middle and half the big triangle into two smaller ones

    Now you have two small ones with 90 degree angles and you know the lines at the bottom

    Gold Star here. Excellent logical thinking.


  • Registered Users, Registered Users 2 Posts: 44,080 ✭✭✭✭Micky Dolenz


    Maybe your question is better suited here.

    Oh.


This discussion has been closed.
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