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    I have attatched a photo of the question (I wasn't sure how to type it out so that it was clear which symbol is which)

    I've managed to do all of part (i) but I cannot get the right answer for (ii) - I think I'm going wrong in finding the upper and lower bounds for r but I cannot see where as I'm using the same method as I did for (i)

    Any help would be amazing!

    Thank you
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    (Original post by amydowse)
    ...
    What are your upper and lower bounds for each angle?
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    I had them as
    36.95 and 37.05
    30.95 and 31.05
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    (Original post by amydowse)
    I had them as
    36.95 and 37.05
    30.95 and 31.05
    For (ii) I got the error to be \pm 0.25
    So I got \alpha = [36.75, 37.25), \beta = [30.75, 31.25)
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    But it says that each is correct to 0.5 degrees??
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    (Original post by amydowse)
    But it says that each is correct to 0.5 degrees??
    Apply the same logic as in the first part. If it's to the nearest 1^othen the error is \pm 0.5^o. So if it's to the nearest 0.5^o, the error is \pm 0.25^o.
 
 
 
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Updated: January 25, 2015
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