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need to know how to convert radians to degrees ? + unit circle ?

Discussion in 'DAT Discussions' started by dentalstudent2021, Aug 12, 2015.

  1. do we have to know how to convert radians to degrees and vice versa ?

    also, should we know the unit circle, atleast the 1st quadrant ?
     
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  3. alexis2010

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    From what I have seen here yes. It's pretty simple though. To convert from radians to degrees you just change π to 180°. For example π/4 = 180/4 = 45°
     
    jjj7236 likes this.
  4. how about the unit circle ?
     
  5. byahnoob

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    You need to know the unit circle. Its crucial.
    If you know the unit circle, you know how to convert from radians to degrees and vice-versa.
     
  6. nornton

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  7. 510586

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    Doesn't take long to manually do it if you don't wanna memorize all the values. The timing on qr is more like if you can see a prob and know how to do it. I feel like the benefits of shaving a second or 2 by not using calculator or by memorizing all 16 values of the unit circle are marginal at best.
     
  8. ThunderSplash

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    You should definitely google the "Unit circle left hand trick". I learned it in high school and it makes the unit circle trivial. As long as you can recognize when sin, cos and tan are positive or negative.
     

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