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anonymous

  • 5 years ago

any tricks to remembering a unit circle?

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  1. anonymous
    • 5 years ago
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    especially the radians?

  2. anonymous
    • 5 years ago
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    Draw Circle with radius. If you are familiar with 30-60-90 and 45-45-90 triangle, just use that for remembering the unit circle

  3. anonymous
    • 5 years ago
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    iknow the degree measurements..i have a quiz tomorrow and have to fill out the blank circle with cos, sin and radians. I just need tricks to remember how to fill it out

  4. anonymous
    • 5 years ago
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    do you just need 90, 180, 370, 0 degrees, or all reference anglew

  5. anonymous
    • 5 years ago
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    all reference angles

  6. anonymous
    • 5 years ago
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    you only need to know three angle 30,45,60 for every else you can derive easily

  7. anonymous
    • 5 years ago
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    If you know the values for 30,60,45 they will workfor all the angles, the signs will change depending what quadrant the angle is in

  8. anonymous
    • 5 years ago
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    ok i got that what about the radians for each angle how do you remember those

  9. anonymous
    • 5 years ago
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    remember that one radian is 180 degree. So always know what's the ratio between the angle and 180 and then stick radian. So If i were to find radian eqivilent of 90, I would find ration 90/180=1/2 stick radian sign 1/2 radian

  10. anonymous
    • 5 years ago
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    so then 60/180 = pi/3

  11. anonymous
    • 5 years ago
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    radian/3

  12. anonymous
    • 5 years ago
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    pi/3 radian

  13. anonymous
    • 5 years ago
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    what about tangent

  14. anonymous
    • 5 years ago
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    iknow it is sin/cos but i cant divide radicals by radicals

  15. anonymous
    • 5 years ago
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    So for example lets find tangent of 30 sin 30= 1/2 cos 30= sqrt(3)/2 1/2* 2/sqrt(3) 2/2sqrt(3)

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