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find tan 30 degrees and tan 45 degrees using the 45-45-90 triangle therom and
30-60-90 triangle theorm

  • math -

    In an easily accessible part of your notebook
    make a sketch of a 30-60-90 triangle, and put in the values
    1 opposite the 30°
    √3 opposite the 60°
    2 opposite the hypotenuse
    MEMORIZE THESE VALUES
    (the smallest is opposite the smallest angle, etc..)

    Do the same for the 45-45-90 using sides
    1 - 1 - √2

    now tanØ = opposite/adjacent or y/x
    tan 30 = 1/√3 , look at your triangle
    tan 45 = 1/1 = 1

    check with your calculator

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