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Math Help - sine problem

  1. #1
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    sine problem

    Hi;
    I am familiar with the sine law(rule) but i've been to a few websites that seem to have the wrong answers.


    A question states find the size of BC given that AB=14cm angle BAC=26 and angle ACB=13.

    They have BC=27.3cm

    I have BC=25.4cm

    I'm just making sure I'm right.

    Thanks.
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  2. #2
    MHF Contributor
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    Re: sine problem

    That's why you need to include the UNITS when you write down a problem. If 13 means 13, the BC = 27.3 cm. If 13 means 13 radians, then BC = 25.4 cm.

    Check your problem statement and your calculator setting.
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  3. #3
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    Re: sine problem

    Ok thanks it was my calculator settings(need to remember to check that).
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