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micabar2696

the hands of a clock have lengths 3cm and 5cm. Find the distance between the tips of the hands at 4 o´clock. Worked solutions please

  • one year ago
  • one year ago

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  1. Mertsj
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    |dw:1359331442099:dw|

    • one year ago
  2. Mertsj
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    The angle made by the hands is 120 degrees. How about the law of cosines to find the missing side of the triangle?

    • one year ago
  3. micabar2696
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    how do i measure that angle?

    • one year ago
  4. Mertsj
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    \[c^2=a^2+b^2-2bc \cos C\]

    • one year ago
  5. Mertsj
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    How many degrees in a circle?

    • one year ago
  6. micabar2696
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    360

    • one year ago
  7. Mertsj
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    Since there are 12 hours on the clock face, divide 360 by 12.

    • one year ago
  8. Mertsj
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    Since there are 12 hours on the clock face, divide 360 by 12.

    • one year ago
  9. micabar2696
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    thaanks! :)

    • one year ago
  10. Mertsj
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    Do you understand?

    • one year ago
  11. Mertsj
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    When the hand moves from the 12 to the 1, it goes 30 degrees. So when it goes from the 12 to the 4 it goes 4 times 30 or 120 degrees.

    • one year ago
  12. micabar2696
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    yes! thank you!

    • one year ago
  13. Mertsj
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    yw

    • one year ago
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