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micabar2696

  • one year ago

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

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  1. Mertsj
    • one year ago
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    |dw:1359331442099:dw|

  2. Mertsj
    • one year ago
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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?

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

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

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

  6. micabar2696
    • one year ago
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    360

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

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

  9. micabar2696
    • one year ago
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    thaanks! :)

  10. Mertsj
    • one year ago
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    Do you understand?

  11. Mertsj
    • one year ago
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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.

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

  13. Mertsj
    • one year ago
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    yw

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