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    The answer is:



    I got R = 5. But I got \alpha = tan^{-1}\frac{3}{4} = 36.87. Where have I gone wrong this time?

    Thank you!

    Sid
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    (Original post by Sidhant Shivram)
    ...
    Your calculator is in degrees mode.
 
 
 
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Updated: December 27, 2014
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