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Math Help - Expressing angles

  1. #1
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    Expressing angles

    Hi, I have this really annoying problem in Geometry..

    There's this triangle:


    Data:

    BD is perpendicular to AC(Both sides of <D form 90 degrees)

    ABC is a right triangle, <B=90

    <A = alpha

    The question is:

    Express using alpha the following angles:
    1. <C
    2. <DBC
    3. <DBA
    For example is alpha was <C + <C then you'd express using alpha the angle <C by writing <C = 1/2alpha


    This should be solved using very basic right triangle rules, but I don't know what to do.

    I need this for tomorrow's homework =/

    Thanks to all helpers
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  2. #2
    MHF Contributor

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    Quote Originally Posted by thejack View Post
    Hi, There's this triangle:

    Data:
    BD is perpendicular to AC(Both sides of <D form 90 degrees)
    ABC is a right triangle, <B=90
    <A = alpha
    The question is:
    Express using alpha the following angles:
    1. <C
    2. <DBC
    3. <DBA
    You should understand that this is not a homework service nor is it a tutorial service. Please either post some of your own work on this problem or explain what you do not understand about the question.
    Here is some help on #1
    m\left( {\angle C} \right) = 90 - \alpha . WHY?
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  3. #3
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    Joined
    Feb 2011
    Posts
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    Quote Originally Posted by Plato View Post
    You should understand that this is not a homework service nor is it a tutorial service. Please either post some of your own work on this problem or explain what you do not understand about the question.
    Here is some help on #1
    m\left( {\angle C} \right) = 90 - \alpha . WHY?
    I need this to prepare for my test and I don't get anything
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