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love_jessika15

  • 2 years ago

Given: line BD is a diameter m angle 1 = 100° m semi circle BC = 30° m semi circle AC= a. 60 b. 110 c. 200

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  1. love_jessika15
    • 2 years ago
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  2. hartnn
    • 2 years ago
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    have you tried this ? which step are you stuck ?

  3. love_jessika15
    • 2 years ago
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    All of the steps haha

  4. hartnn
    • 2 years ago
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    do you know that measure of central angle equals measure of arc. |dw:1360890234039:dw|

  5. love_jessika15
    • 2 years ago
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    Yes I knew that.

  6. hartnn
    • 2 years ago
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    now , measure of semicircle =180 you knew this ? |dw:1360890434105:dw|

  7. love_jessika15
    • 2 years ago
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    I know that I also know that a whole circle equals 360 degrees.

  8. love_jessika15
    • 2 years ago
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    I just need to know how to find out AC

  9. hartnn
    • 2 years ago
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    okkk, AC = AB+BC = angle 2+ angle 3, right ?

  10. love_jessika15
    • 2 years ago
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    Yupp.

  11. love_jessika15
    • 2 years ago
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    The answer is 110! Thank youu (:

  12. hartnn
    • 2 years ago
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    and since BC =30, you know angle 3=30 ... oh, you got it ! good :)

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spraguer (Moderator)
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