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Math Help - Radians

  1. #1
    Member M670's Avatar
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    Radians

    Using your calculator, find a solution for in RADIANS (if possible). If no solution exists, enter NONE.

    Though many solutions may exist, you should only provide ONE answer (which comes from using the inverse trigonometric function keys on your calculator).

    when (round your answer to four decimal places)

    I got what I believe to be the answer but I am being told its wrong

    so i take  \tan (\theta-4)=0.25 \rightarrow \tan^-1( \tan (\theta-4)=\tan^-1(0.25)\rightarrow \theta-4=\tan^-1(0.25) \rightarrow \theta=18.03624347

    Are my calculation correct?
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  2. #2
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    Re: Radians

    Quote Originally Posted by M670 View Post
    Using your calculator, find a solution for in RADIANS (if possible). If no solution exists, enter NONE.
    so i take  \tan (\theta-4)=0.25 \rightarrow \tan^-1( \tan (\theta-4)=\tan^-1(0.25)\rightarrow \theta-4=\tan^-1(0.25) \rightarrow \theta=18.03624347
    Are my calculation correct?
    NO


    \arctan(0.25)=0.24498
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  3. #3
    Member M670's Avatar
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    Re: Radians

    Quote Originally Posted by Plato View Post
    NO


    \arctan(0.25)=0.24498
    When I calculate  \arctan(0.25)=14.036243468
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  4. #4
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    Re: Radians

    Quote Originally Posted by M670 View Post
    When I calculate  \arctan(0.25)=14.036243468

    Put your calculator in radian mode.
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  5. #5
    Member M670's Avatar
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    Re: Radians

    ahh ha now it works ...  \theta = 4.2448
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