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I LOVE TRIGONOMETRY BUT!!! (three dimensions) watch

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    HI
    i really found trigonometry but that lesson of (trigonometry in three dimensions ) was my real problem especially when i face that kind of questions which says ( calculate the angle AC makes with plane CDEF ) wth is that
    really i cant understand what the question really means ! this part ( makes with plane CDEF ) ")

    maybe it seems stupid but i really can not get it till now .

    thanks for helping =)
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    (Original post by nerdholic)
    HI
    i really found trigonometry but that lesson of (trigonometry in three dimensions ) was my real problem especially when i face that kind of questions which says ( calculate the angle AC makes with plane CDEF ) wth is that
    really i cant understand what the question really means ! this part ( makes with plane CDEF ) ")

    maybe it seems stupid but i really can not get it till now .

    thanks for helping =)
    link for help

    http://www.madasmaths.com/archive/ma...ensuration.pdf

    fully worked solutions in downloadable PDF
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    One tip. Draw lots and lots of 2D triangles and label them to show what you're doing. It helps.
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    (Original post by nerdholic)
    HI
    i really found trigonometry but that lesson of (trigonometry in three dimensions ) was my real problem especially when i face that kind of questions which says ( calculate the angle AC makes with plane CDEF ) wth is that
    really i cant understand what the question really means ! this part ( makes with plane CDEF ) ")

    maybe it seems stupid but i really can not get it till now .

    thanks for helping =)

    Have you tried this : Get an OXO cube box and cut out a window on one of the sides. Write the vertices names on the inside of the box. Perhaps that will help you visualise where each pane and each triangle is. It works for me and hope it does for you too.
 
 
 
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