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brookieismyname

  • 3 years ago

Lines CD and DE are tangent to circle A shown below If arc CE is 126°, what is the measure of ∡CDE? 126° 63° 117° 54°

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  1. brookieismyname
    • 3 years ago
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  2. shubhamsrg
    • 3 years ago
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    |dw:1338493954982:dw| can you tell me the measure of this angle?

  3. brookieismyname
    • 3 years ago
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    I don't know how to find it :/

  4. shubhamsrg
    • 3 years ago
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    this angle measure is universal.. alright,,i'll tell you,,but you have to reach the ans yourself..i'll drop hints when you require.. a tangent always makes a 90 degree angle with the radius!!

  5. brookieismyname
    • 3 years ago
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    Wait isn't the measure of the angle half the arc?

  6. shubhamsrg
    • 3 years ago
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    half the arc? which arc?? you're confusing with another property of circle.. just remember this :a tangent always makes a 90 degree angle with the radius!!

  7. brookieismyname
    • 3 years ago
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    I don't get how you would find the angle measure

  8. shubhamsrg
    • 3 years ago
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    see,,CAED is a quadilateral..you know 3 angles of it..cant you find the 4th?

  9. brookieismyname
    • 3 years ago
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    Would I subtract the three angles from 360?

  10. shubhamsrg
    • 3 years ago
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    yep.. well 2 of those are 90 degress,,(radius tangent angle),,one is 126(given the ques) just find the 4th,,thats what the ques asks you to do!

  11. brookieismyname
    • 3 years ago
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    So would it be 54 degrees?

  12. shubhamsrg
    • 3 years ago
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    bingo! ^_^

  13. brookieismyname
    • 3 years ago
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    Thanks so much!<3

  14. shubhamsrg
    • 3 years ago
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    glad to help ^_^

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