Mathematics
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OpenStudy (lifeisadangerousgame):
I have a couple of geometry questions, could someone help me? c:
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OpenStudy (lifeisadangerousgame):
I need to find out what what the measure of angle HJG is
OpenStudy (rajee_sam):
It will be 2 x 25° = 50°
OpenStudy (lifeisadangerousgame):
So what is the measure of arc HG is 25?
OpenStudy (rajee_sam):
50°
OpenStudy (lifeisadangerousgame):
They're both 50 degrees?
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OpenStudy (rajee_sam):
Arc measurement is the angle subtended at the center by the arc, which is angle HJG which is 50
OpenStudy (rajee_sam):
There are two arcs one is the major HG and the minor HG
OpenStudy (rajee_sam):
Major HG is 360-50 = 310
OpenStudy (lifeisadangerousgame):
Can I send you the document so you can see the questions?
OpenStudy (rajee_sam):
Minor HG is 50
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OpenStudy (rajee_sam):
I will try
OpenStudy (lifeisadangerousgame):
Thanks c:
OpenStudy (rajee_sam):
I cannot open .doc post it like you have done before one by one
OpenStudy (lifeisadangerousgame):
ooh okay, one second
OpenStudy (lifeisadangerousgame):
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OpenStudy (lifeisadangerousgame):
There's the next one I need help with
OpenStudy (rajee_sam):
Lind AD is a straight line and you are given angle BPA = 100
|dw:1368892506240:dw|
OpenStudy (rajee_sam):
You need keep up the pace pl. I do not have unlimited time in my hands.
OpenStudy (lifeisadangerousgame):
I'm trying, but I don't know what Angle BPD is
OpenStudy (rajee_sam):
AD is a straight line. What is the angle in a Straight line?
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OpenStudy (lifeisadangerousgame):
180
OpenStudy (rajee_sam):
Now Angle BPA and BPD are two sides of that straight angle. One is 100 so what is the other?
OpenStudy (lifeisadangerousgame):
80?
OpenStudy (rajee_sam):
yes
OpenStudy (rajee_sam):
Now you know the angle subtended by the arc at the center.
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OpenStudy (rajee_sam):
The measure of it will be the portion of the circumference that has 80° in it. You are given the diameter. Can you find the Circumference?
OpenStudy (lifeisadangerousgame):
37.68?
OpenStudy (rajee_sam):
yes
OpenStudy (rajee_sam):
now this 37.68 is for the entire 360°, now you need only for 80°
OpenStudy (rajee_sam):
use ratio and proportion to find your answer
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OpenStudy (lifeisadangerousgame):
So 37.68/360?
OpenStudy (rajee_sam):
that times 80
OpenStudy (lifeisadangerousgame):
8.37333--
OpenStudy (rajee_sam):
yes
OpenStudy (rajee_sam):
unit is Inches
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OpenStudy (lifeisadangerousgame):
Got it:D Could we keep going? Its okay if we can't, I appreciate your help:3
OpenStudy (rajee_sam):
How many more do you have?
OpenStudy (lifeisadangerousgame):
I have 6, but we don't have to do all 6
OpenStudy (rajee_sam):
We will do 3. Choose whichever you want
OpenStudy (lifeisadangerousgame):
Okay, thanks! First question
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OpenStudy (rajee_sam):
|dw:1368893556689:dw|