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Why is the unit circle called two pi?
A unit circle is not normally called 2 pi. Because the radius length measure of the unit circle is 1 unit, then the circumference of a unit circle is 2*pi, and its area is pi.
What are the x-intercepts of unit circle in sin?
all multiples of pi. pi, 2 pi, - pi, -2 pi and so on...
Why does pi not have units?
Pi is a natural constant of the ratio circumference divided by diameter. That ratio cannot have any unit.
What is a circumference of a unit circle?
2 pi
How is pi in relation to a circle?
Pi is related to the area and the circumference of the circle. The area is Pi multiplied by the radius of the circle squared and the circumference is Pi times the diameter of the circle. if you're wondering how it works, pi is the area of a circle with radius of 1 (unit), and the circumference of a circle with a radius of ½ (unit).
What is pi over 12 on a radian unit circle?
Pi over 12 on a radian unit circle is a little more than a quarter of the circle. Radian units are an alternative to degrees.
How do you do the math unit pie and turn it in to a percentage?
The math unit pi (not pie!) is approx 3.14159 which is 314.159%
What is the circumference of a unit circle?
Since the radius of the unit circle is 1, the circumference is 2 x pi.
What is the area of a square with side x in circular inches?
The area of a square with side x is x2 SQUARE units. A circle with diameter 1 unit, has an area of pi/4 square units. Since the area of a square with side of 1 unit is 1 square unit, let us call the area of a circle of diameter 1 unit to 1 circular unit. That gives 1 circular unit = pi/4 square units. So a square with sides of x units = x2 units = pi*x2/4 or pi*(x/2)2 units.
What figure has an area exactly equal to pi?
The area of a circle is {pi} x radius2. 12 = 1, so: a circle of radius 1 unit has an area of exactly pi units2
What is the value of cosine at pi?
Looking at a unit circle, cosine is the horizontal coordinate. Pi radians is halfway around the circle (180°), so the coordinate is (-1,0). Cosine(pi) = -1
What is special about pi and what you have to use it for?
Pi is an irrational number, and is the circumference of the unit circle. It's a neat number to use in all sorts of circumstances.
