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Math Help - I want check my answers

  1. #1
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    I want check my answers

    Hi


    I want check my answers
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  2. #2
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    Are you working in degrees or radians? It looks like you are using radians for (i) and degrees for (ii)! For 4iA, I get a number (assuming radians) close to but not equal to what you have. 4iB, of course, is correct- the cosine must be between -1 and 1 and cannot be larger than 2. For 4iC, it doesn't matter whether you use radians or degrees, of course, but I get an answer nowhere near yours.

    4iiA is almost correct. It should be rounded to 47.367 degrees.
    You should have gotten "error" again for 4iiB- a cosine cannot be larger than 1. I suspect you took the cosine rather than the arccosine.
    For 4iiC, again I got an ansewer nowhere near yours.

    For problem 7, I get answers very different from yours.
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