please help explain this?

If the measure of θ is A radians and B degrees, then A=180B/π

Question

please help explain this?

If the measure of θ is A radians and B degrees, then A=180B/π

anonymous · Answer

we can do this with knowing only two values for $\theta$ and knowing converting from one measure to the other is linear
we know $0$ degrees is the same as $0$ radians 
we know $90$ degrees is $\pi$ radians 

so to convert from degrees to radians, divide by 180 and multiply by $\pi$
and to convert from radians to degrees, multiply  by 180 and divide by $\pi$

kind of like those "direct proportion" questions

anonymous · Answer

damn i mean " we know $180$ degrees is $\pi$ radians "

anonymous · Answer

sorry about that typo

anonymous · Answer

no problem :), so 0°=0 radians and 180°=π radians

so what do i divide by 180 and multiply by π?

anonymous · Answer

sorry i just realized it was only the explanation i needed to do and not solve a problem :) thanks so much!!

anonymous · Answer

yw