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Mathematics 8 Online
OpenStudy (ohohaye):

Did I get the right answer? (Picture in the comments)

OpenStudy (ohohaye):

OpenStudy (ohohaye):

@imqwerty

OpenStudy (nuttyliaczar):

Firstly, how many radians are in a full circle?

OpenStudy (ohohaye):

2pi?

OpenStudy (nuttyliaczar):

Yes and there are 360 degrees in that. For every 2 pi you have 360 degrees. You have 3.5 pi here, which is 1.5 pi more than a full circle. Can you take it from there?

OpenStudy (ohohaye):

So that means that 210 would also be an answer right?

OpenStudy (nuttyliaczar):

What is 1.5 pi equal to in degrees?

OpenStudy (ohohaye):

I'm not sure

OpenStudy (nuttyliaczar):

2 pi is 360 degrees. So 1.5 pi?

OpenStudy (ohohaye):

360+180?

OpenStudy (nuttyliaczar):

1.5 pi is not 180 degrees. That's 1 pi

OpenStudy (ohohaye):

I don't know

OpenStudy (nuttyliaczar):

It's just a matter of ratios. If 2 pi is 360 degrees then the only logical value for 1 pi is half that, which is 180

OpenStudy (ohohaye):

So is it 630?

OpenStudy (nuttyliaczar):

Yes it's 630 degrees, so do you know why now?

OpenStudy (ohohaye):

because 2pi is 360 and pi is 180, .5 is 90 and if you add those it becomes 630

OpenStudy (nuttyliaczar):

Yes there you go =)

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