anonymous
  • anonymous
The measure of AXB is 234. What is the measure of the tangent-chord angle ABC ?
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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ganeshie8
  • ganeshie8
let O be the center of circle.
ganeshie8
  • ganeshie8
first, find \(\angle OBA\)

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anonymous
  • anonymous
How would i find that -__ - ?
anonymous
  • anonymous
There's no O ?
anonymous
  • anonymous
Oh i get what you mean, O represents the center of the circle.
ganeshie8
  • ganeshie8
Yes. draw it you will see how to find \(\angle OBA\)
anonymous
  • anonymous
|dw:1370536317400:dw|
anonymous
  • anonymous
Ignore the double o
anonymous
  • anonymous
It was only suppose to be one -__ -
anonymous
  • anonymous
63, because a circle is 360 degrees and i still need the degrees from the tangent-chord
ganeshie8
  • ganeshie8
let me show u
anonymous
  • anonymous
Okay
ganeshie8
  • ganeshie8
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ganeshie8
  • ganeshie8
that angle at the center would be 126
anonymous
  • anonymous
That equals 360 so what would be left for the outside segment ?
anonymous
  • anonymous
Also i don't know how you got 126
ganeshie8
  • ganeshie8
126 = 360-234
ganeshie8
  • ganeshie8
minor arc = 360-major arc
anonymous
  • anonymous
I got that but i thought i needed to divide it since the tangent-chord was left -__ -
ganeshie8
  • ganeshie8
lets go step by step
ganeshie8
  • ganeshie8
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ganeshie8
  • ganeshie8
radius and tangent make 90 degree angles. so that angle is 90
ganeshie8
  • ganeshie8
find
anonymous
  • anonymous
So everything time i look for a tangent-chord i add up what i find as the radius by 90 then
ganeshie8
  • ganeshie8
Yes its 90 + that angle
anonymous
  • anonymous
ganeshie8
  • ganeshie8
how did u get that... no angle can be greater than 360
ganeshie8
  • ganeshie8
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ganeshie8
  • ganeshie8
anonymous
  • anonymous
Didn't you mean that i add up the 126 + 234 and then add 90 or did you just mean 126 + 90?
ganeshie8
  • ganeshie8
nope look at the pic
ganeshie8
  • ganeshie8
stare at it for some time.
anonymous
  • anonymous
Just to be clear you did this 180 - 126 = 54/2 = 27 ?
ganeshie8
  • ganeshie8
Yes
anonymous
  • anonymous
Got it.
ganeshie8
  • ganeshie8
great ! we take half of 54 cuz, the triangle over there is isosceles. the base angles are equal, so each equal to half of 54

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