Maths question c2

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  1. stardude8's Avatar
    1 23-05-2012  08:41
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    • Posts: 78
    Maths question c2
    Hey guys,
    I have been working through some past papers and solomon papers, and I came across a question which I found difficult. (For reference it is june 2011 edexcel c2 paper, question 5b).

    Now I used the tan ratio, as 6-r is the adjacent, and the radius the opposite, however in the mark scheme, sin is used. Could someone please explain to me why tan is not used and why sin must be used here?

    (Sorry I'm not sure how to upload attachments so I just referenced the paper )
  2. stardude8's Avatar
    2 23-05-2012  15:36
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    • Posts: 78
    Re: Maths question c2
    Anybody there please help!
  3. bananarama2's Avatar
    3 23-05-2012  15:44
    • TSR Legend
    Re: Maths question c2
    (Original post by stardude8)
    Anybody there please help!
    Click image for larger version.  Name: Untitled.png  Views: 21  Size: 2.2 KB  ID: 150663

    Does that help?
    Post rating:
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  4. stardude8's Avatar
    4 23-05-2012  17:11
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    • Posts: 78
    Re: Maths question c2
    Ahh Thank you so much! Sorry that was really stupid looking back. Thanks again (+1 rep)
  5. bananarama2's Avatar
    5 23-05-2012  17:13
    • TSR Legend
    Re: Maths question c2
    (Original post by stardude8)
    Ahh Thank you so much! Sorry that was really stupid looking back. Thanks again (+1 rep)
    I know the answer because I made the same stupid mistake
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