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Q: 2pi is an integer

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Radius of circle: 132/2pi = 21cm to the nearest integer

Reciprocal of 2pi = 1/(2pi) = 0.159155(rounded)

The cosine of 2pi is 1. In fact, for every integer N, the cosine of 2 N pi is 1.

The cos of 2pi is 360 degrees which is 1.

Yes. 2*pi is irrational, pi is irrational, but their quotient is 2pi/pi = 2: not only rational, but integer.

The circumference of a circle with a 2pi radius is: 39.58

(pi^2+2pi)/2pi

NO. pi is an irrational number, therefore, 2pi is also an irrational number/

1

No. 2Pi r is equal to Pi d, though.

Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)

area = 2pi*r2circumference = 2pi*rThe ratio of their circumferences will be 2pi*r1 /2pi*r2 = r1/r21) r2 = 6pi/2pi = 3. r1 = root(3).2) r = 150pi/2pi = 75. r2 = root(75)So the ratio of their circumferences isr1/r2 = root(3)/root(75)

Because any angle increased by k*2pi radians (= k*360 degrees) where k is an integer, is, effectively, the same angle. This implies that f(x + 2kpi) = f(x) for any angle x and any trig function f. This gives f a maximum period of 2pi radians.

No it does not have a name.

2pi

2pi

2PI

Circumf. divided by 2Pi = radius 244.92 / 2Pi = 38.98 radius (to nearest hundredth).

Let pi=3.14 So: 2(3.14) -> 2(3.14)=6.28 Therefore: 2pi=6.28

the period is 2pi. period is 2pi/b and the formula is y=AsinBx.

One revolution = 2Pi radians 16.75 radians / 2Pi radians/rev ~= 2.666 revolutions

Surface area you mean? Then 2pi*r2 + 2pi*r*h where h=height and r=radius

Circumference = 2pi*r 26.69/2pi = 4.248m (rounded to three decimal places)

Assuming you mean that the pi is not within the sin(2pi), its a vertical shift of +pi

Area of a circle = 2pi*r2 = 2pi*(4.2)2 = 110.84