Примери за използване на Pi radians на Английски и техните преводи на Български
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if I have pi radians how many degrees is that?
Once again, I forgot the formula so I just remember that pi radians is equal to 180 degrees.
well we know that for 180 degrees we have pi radians.
So we're going to multiply this times well we know we have pi radians for every 180 degrees or we can even write it this way pi radians for every 180 degrees.
So if I did two cycles in pi radians, then we must be able to do four cycles in 2pi radians. .
Then if we go all the way around the circle to 2 pi radians, we're back at this point again.
we see once again that the period is pi radians.
Well we know that it is 2 pi radians.
So pi radians equal 180 degrees
So we can multiply that times 100-- sorry--pi radians for every 180 degrees.
So how long is it going to take for it to complete two pi radians?
And then given that there 2 pi radians in a circle, we can now figure out a relationship between radians and degrees.
If I'm doing pi radians per second, my ball here is going to go one second,
I have to complete two pi radians.
So if the radian is the angle that sub tends an arc of r, then the angle that subtends an arc of 2 pi r is 2 pi radians.
And you can have(pi) radians are equal to 180 degrees or another way to think about it going halfway around a circle in radians is(pi) radians.
Sine of x takes 2 pi radians to complete one circle-- one cycle while sine of 2x only takes pi radians to complete one cycle.
Or, if we wanted to write that in radians, you just right 120 degrees times pi radian per 180 degrees, degrees cancel out.
We're at pi radian.
Sine of pi radians(0, approximately).