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Math Help - Walk me through this please

  1. #1
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    Geometry homework help

    Sorry if this seems a bit easy but I'm having troubles doing this question on my home work.

    The question is if line RU is an angle bisector of triangle RTS, angle RTU=13x-24 angle TRS= 12x-34 and angle RUS=92. Find Angle RSU. is RU perpendiculare to line TS.

    Can someone walk me through this. Thanks.
    Last edited by maningrey; November 7th 2009 at 04:32 PM. Reason: Formal Text.
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  2. #2
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    Quote Originally Posted by maningrey View Post
    Sorry if this seems a bit easy but I'm having troubles doing this question on my home work.

    The question is if line RU is an angle bisector of triangle RTS, angle RTU=13x-24 angle TRS= 12x-34 and angle RUS=92. Find Angle RSU. is RU perpendiculare to line TS.

    Can someone walk me through this. Thanks.
    how can RU possibly bisect angle the RTS?
    isn't it a bisector of angle TRS instead???
    and if RU is perpendicular to TS, angle RUS cannot be 92 degrees...
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  3. #3
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    Ukorov is correct; you should realise RU CANNOT be perpendicular
    to TS, since angle RUS = 92 degrees.

    Since angle TRS = 12x - 34, then angle URS = (12x - 34)/2 = 6x - 17.
    Plus we know angle RUS = 92; so angle RSU = 180 - 92 - (6x - 17).

    The information that angle RTU = 13x - 24 is NOT required.
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  4. #4
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    Quote Originally Posted by Wilmer View Post
    Ukorov is correct; you should realise RU CANNOT be perpendicular
    to TS, since angle RUS = 92 degrees.

    Since angle TRS = 12x - 34, then angle URS = (12x - 34)/2 = 6x - 17.
    Plus we know angle RUS = 92; so angle RSU = 180 - 92 - (6x - 17).

    The information that angle RTU = 13x - 24 is NOT required.
    Thanks sorry. I'm hopeless at maths but I think that covers it

    If I need anything else then I will post.

    Thanks again.
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