2pi is an integer

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โˆ™ 2017-02-19 06:53:12

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2 times pi is not an integer. Since Pi is an irrational number, 2 pi is also an irrational number.

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โˆ™ 2017-02-19 06:53:12
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Q: 2pi is an integer
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What is the radius of the circle if circumference is 132cm?

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

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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.

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