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Mathematics 17 Online
OpenStudy (lifeisadangerousgame):

I have a couple of geometry questions, could someone help me? c:

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?

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

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):

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?

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.

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

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

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

OpenStudy (rajee_sam):

|dw:1368893556689:dw|

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