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Sariah

  • 3 years ago

Convert the angle in radians to degrees. \LARGE \frac{12\pi}{9}

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  1. Sariah
    • 3 years ago
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    |dw:1322510982773:dw|

  2. cwrw238
    • 3 years ago
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    use the identity pi radians = 180 degrees

  3. Sariah
    • 3 years ago
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    a. 240 b. 239 c. 242 d. 241

  4. Sariah
    • 3 years ago
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    One of this answer is right. a. 240 b. 239 c. 242 d. 241

  5. cwrw238
    • 3 years ago
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    pi rad = 180 degrees 1 .......= 180/pi 12pi/9 rads = 12 * pi * 180 degrees ----------- 9 * pi

  6. cwrw238
    • 3 years ago
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    can you pick it up from here?

  7. Sariah
    • 3 years ago
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    But the teacher said that i have to choose one answer from the nex answers: a. 240 b. 239 c. 242 d. 241

  8. cwrw238
    • 3 years ago
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    yup - but you can work it out from the formula i gave you - that is 12 * pi * 180 degrees ----------- 9 * pi can you work this out?

  9. cwrw238
    • 3 years ago
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    the pi's cancel out to give 12* 180 ------- 9 9 divides into 180 20 times so this gives 12* 20 = 240 the answer is a. 240

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