annmeez
  • annmeez
Help please, math cramming for my final on friday, swamped with work D:! Medals will be given if you help me! The figure shows secant GC and tangent GB intersecting to form an angle. Find x & y If necessary, round to the tenths place. https://media.edgenuity.com/evresources/2092457_f2a5c2f2-1ea8-4ffd-a065-3de8116cb1a3.png
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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mathstudent55
  • mathstudent55
|dw:1450284849268:dw|
mathstudent55
  • mathstudent55
To find x, use arc measures 30 deg and 58 deg and the formula above.
annmeez
  • annmeez
thank you!

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annmeez
  • annmeez
44?
mathstudent55
  • mathstudent55
|dw:1450285041881:dw|
mathstudent55
  • mathstudent55
Yes. x = 44 deg
mathstudent55
  • mathstudent55
Now for y, you need to make sure you get a and b in the second figure correctly.
mathstudent55
  • mathstudent55
|dw:1450285339926:dw|
mathstudent55
  • mathstudent55
For finding y, b = 58. What is a?
mathstudent55
  • mathstudent55
|dw:1450285434673:dw|
annmeez
  • annmeez
1/2 of 161?
mathstudent55
  • mathstudent55
|dw:1450285441799:dw|
annmeez
  • annmeez
a is half of 161?
mathstudent55
  • mathstudent55
|dw:1450285502391:dw|
mathstudent55
  • mathstudent55
No. a is more than 161.
annmeez
  • annmeez
it's double?
mathstudent55
  • mathstudent55
No. The "a" arc you need in the formula is made up of the two arecs with measures 161 deg and 30 deg, so a = 161 + 30. b is 58 again.
annmeez
  • annmeez
y= 66.5?
annmeez
  • annmeez
x=44 and y= 66.5
mathstudent55
  • mathstudent55
\(y = \dfrac{1}{2}(a - b)\) \(y = \dfrac{1}{2}[(161 + 31) - 58]\) \(y = 66.5\)
mathstudent55
  • mathstudent55
You are correct.

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