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Since C = 2πr, the circumference of a unit circle is 2π. In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. [1] Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane.
The unit of measurement varies by region: a United States liquid tablespoon is approximately 14.8 mL (exactly 1 ⁄ 2 US fluid ounce; about 0.52 imperial fluid ounce), a British tablespoon is approximately 14.2 mL (exactly 1 ⁄ 2 imperial fluid ounce; about 0.48 US fluid ounce), an international metric tablespoon is exactly 15 mL (about 0.53 ...
When radians (rad) are employed, the angle is given as the length of the arc of the unit circle subtended by it: the angle that subtends an arc of length 1 on the unit circle is 1 rad (≈ 57.3°), and a complete turn (360°) is an angle of 2 π (≈ 6.28) rad.
These cutlery spoons are also called a "teaspoon" and "tablespoon", but are not necessarily the same volume as measuring spoons with the same names: Cutlery spoons are not made to standard sizes and may hold 2.5~7.3 ml (50%~146% of 5 ml) for teaspoons [3] and 7~20 ml (47%~133% of 15 ml) for tablespoons. The difference in size can be dangerous ...
tbsp ≡ 1 ⁄ 2 US fl oz ... The angle subtended at the center of a circle by an arc whose length is equal to the circle's radius. ... (SI unit) m/s 2: ≡ 1 m/s 2 ...
English: Some common angles (multiples of 30 and 45 degrees) and the corresponding sine and cosine values shown on the Unit circle.The angles (θ) are given in degrees and radians, together with the corresponding intersection point on the unit circle, (cos θ, sin θ).
The circumference of a circle is the distance around it, but if, as in many elementary treatments, distance is defined in terms of straight lines, this cannot be used as a definition. Under these circumstances, the circumference of a circle may be defined as the limit of the perimeters of inscribed regular polygons as the number of sides ...
where A is the area of an epicycloid with the smaller circle of radius r and the larger circle of radius kr (), assuming the initial point lies on the larger circle. A = ( − 1 ) k + 3 8 π a 2 {\displaystyle A={\frac {(-1)^{k}+3}{8}}\pi a^{2}}