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Math Help - Using Reference Angles

  1. #1
    Newbie
    Joined
    Apr 2009
    Posts
    1

    Using Reference Angles

    Hey, I have been absent from my math class for about 3 days and i have only a little idea what is going on. I have a test tomorrow and need to learn how to do this.
    Can someone help me solve 1 example of every kind of problem and from then on i can study?

    For example,
    when given-need to find quadrant,reference angle,and EXACT value (no dec.)
    sin 30---

    cos 135---

    sin3pi/4

    cos5pi/3

    csc4pi/3
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  2. #2
    MHF Contributor
    Joined
    Mar 2007
    Posts
    1,240

    Talking

    Since you're not familiar with the topic yet, a list of numbers (being the solutions) is unlikely to prove helpful.

    Since a forum post can't really replace three days of class lectures, please try some online lessons instead.

    . . . . .Google results for "reference angles"
    . . . . .Google results for "four quadrants"
    . . . . .Google results for "unit circle"
    . . . . .Google results for "radians degrees"
    . . . . .Google results for "exact value sin cos"

    Once you have learned the basic terms and techniques, please attempt at least one exercise. If you get stuck, you will then be able to reply with a clear listing of your work and reasoning so far, and we'll then be able to provide links or clarifications for any remaining "gaps" in your knowledge.

    Thank you!
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