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Math Help - review needed for trigonometric question

  1. #1
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    review needed for trigonometric question

    Hi everyone,
    I have been in doubt with my answer lately and needed someone to advice on it.
    Here's the function: arccos(y/x) whose domain I am trying to figure out.
    What I think is that the correct answer is {(x,y): -1 =< y/x =< 1}.
    Please let me know if I am right or not.
    Thank you
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  2. #2
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    Quote Originally Posted by Sonia View Post
    Hi everyone,
    I have been in doubt with my answer lately and needed someone to advice on it.
    Here's the function: arccos(y/x) whose domain I am trying to figure out.
    What I think is that the correct answer is {(x,y): -1 =< y/x =< 1}.
    Please let me know if I am right or not.
    Thank you
    You are right.
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