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calculator help

  • 18-10-2013 2:57pm
    #1
    Hedgecutter
    Registered Users, Registered Users 2 Posts: 1,065 ✭✭✭


    doing trig on new sharp EL-W531calculator.

    when I type in tan-1 36/22=4.0185 I should get 58.57deg. its in deg function, cant figure out what wrong.


Comments

  • #2
    TheBody
    Registered Users, Registered Users 2 Posts: 5,637 ✭✭✭TheBody


    Hedgecutter wrote: »
    doing trig on new sharp EL-W531calculator.

    when I type in tan-1 36/22=4.0185 I should get 58.57deg. its in deg function, cant figure out what wrong.

    Are you sure you have the calculator set to degrees?


  • #3
    Michael Collins
    Moderators, Science, Health & Environment Moderators Posts: 1,852 Mod ✭✭✭✭Michael Collins


    Hedgecutter wrote: »
    doing trig on new sharp EL-W531calculator.

    when I type in tan-1 36/22=4.0185 I should get 58.57deg. its in deg function, cant figure out what wrong.

    You need to put the term you want to take the inverse tangent of inside brackets i.e. you need to do

    [latex] \tan^{-1}(36/22) [/latex]

    not

    [latex] \tan^{-1}(36)/22 [/latex]

    which is a different expression.


  • #4
    Hedgecutter
    Registered Users, Registered Users 2 Posts: 1,065 ✭✭✭Hedgecutter


    Michael Collins wrote: »
    You need to put the term you want to take the inverse tangent of inside brackets i.e. you need to do

    [latex] \tan^{-1}(36/22) [/latex]

    not

    [latex] \tan^{-1}(36)/22 [/latex]

    which is a different expression.

    Cheers, feel a bit stupid. So simple.


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