anonymous
  • anonymous
Please help :( Given: Circle O with tangent PA , secant PBC, diameter DOE, and chord AC. PA = 20, PB = 8, AF = CF, measure angle APC = 49, and measure of arc AB = 41. Please help me find the measure of angle COD.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1338705728728:dw|
anonymous
  • anonymous
are the angle measure and arc measures are in degrees?
anonymous
  • anonymous
yes.

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Callisto
  • Callisto
Angle AOB = 41 degrees angle AOC = 180 - 41 degrees = 139 degrees (adj. angles on st. line) Since AF = FC . OD is perpendicular to AC (line joining from centre perpendicular to chord bisects chord) and triangle AOC is an isos triangle angle AOD = angle DOC = angle AOC / 2 = 139/2 = ... ?
anonymous
  • anonymous
69.5??? |dw:1338706212875:dw|
shubhamsrg
  • shubhamsrg
i'll give you hints : (altough i find some info to be useless in the ques) use these things : 1)join OA 2) if a line from the center bisects a chord,that line is perpendicular to the chord 3)a perpendicular to the opposite side in an isosceles triangle bisects the angle in between 4)tangent and radius are perpendicular 5)sum of angles in a triangle = 180 6)sum of linear angles =180 you should get your ans then..
shubhamsrg
  • shubhamsrg
hmmn..@dpaInc already solved it !!
anonymous
  • anonymous
yeahh, pretty much. But thanks, everyone, for helping me x) You all helped me understand the problem a little bit more so thank you x)
anonymous
  • anonymous
I wish I can give medals to you all but sadly, I can't :(
anonymous
  • anonymous
no...it was @Callisto ... :) wish i could take credit though...
Callisto
  • Callisto
You guys make it too.... complicated :|
anonymous
  • anonymous
:) that's what we do....
shubhamsrg
  • shubhamsrg
oh yes..i missed @Callisto post...hmnn..

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