what is the formula to find the arc length of a sector?
429067
You can find the arc length by converting the circumference formula. With a central angle in degrees, it's 2 times pi times the radius (that's the circumference formula) times n/360, where n is the central angle. With radians, it's just the radius times the angle, or r*C.
480994
["R = earth's radius (mean radius = 6,371km)", 'Δlat = lat2− lat1.', 'Δlong = long2− long1.', 'a = sin²(Δlat/2) + cos(lat1). cos(lat2). sin²(Δlong/2)', 'c = 2. atan2(√a, √(1−a))', 'd = R.c.']
414427
Find Length of a New Line The length of the new line, between the given point and the newly-found intersection point, is the distance between the point and the original line. To find the distance, subtract the x and y values to get the x and y displacements.
188297
['Draw a sketch of the field line(s) at the point where the net electric field is to be determined. ... ', 'Determine the magnitude of each field at that location using the electric-field equation.', 'Resolve the magnitude of each field line into component directions.']
522062
Circular arcs A practical way to determine the length of an arc in a circle is to plot two lines from the arc's endpoints to the center of the circle, measure the angle where the two lines meet the center, then solve for L by cross-multiplying the statement: measure of angle in degrees/360° = L/circumference.
472675
The angle of impact can be calculated from the measurement of the opposite side which is the width and the length is hypotenuse of the blood stain. ... Divide the width of the splatter by its length. Determine the arcsin of that number, typically using a calculator with an arcsin function.
1302096
['Project duration expected E = 5 + 15 + 4 + 5 = 29 days (i.e. the total of te-s for activities on the Critical Path).', 'Variance of the Critical Path = 2.79 + 2.79 + 0.45 + 0 = 6.03.', 'Standard Deviation (SD) of project duration is √6.03 = 2.46.']
1101114
['Cube: Surface area = 6 × a2', 'Right circular cylinder: Surface area = 2 × pi × r2 + 2 × pi × r × h. ... ', 'Rectangular prism: Surface area = 2 × l × w + 2 × l × h + 2 × w × h. ... ', 'Sphere: Surface area = 4 × pi × r2 ... ', 'Right circular cone: Surface area = pi × r2 + pi × r ×( √(h2 + r2)) ... ', 'Right square pyramid: Surface area = s2 + 2 × s × l.']
1016340
['A = (sector angle / 360 ) * (pi *r2)', 'A = (sector angle / (2*pi)) * (pi * r2)', 'A = (fraction of the circle) * (pi * r2)']
518299
Let's start with Step 1. If you know that the arc is one-fourth of the circle, then you can multiply the perimeter by 1/4 (or divide by 4) to get the arc length. For example, if a sector is 1/4 of a 500 perimeter, then the arc of the sector is 500 / 4, or 125.
20516
['Apply the equation. to find the magnitude, which is 8.6.', 'Apply the equation theta = tan–1(y/x) to find the angle: tan–1(–7.0/–5.0) = 54 degrees. However, note that the angle must really be between 180 degrees and 270 degrees because both vector components are negative.']
934439
Calculating the perimeter of a rhombus or diamond is simple because of its equal-length sides. Find the length of one of the diamond's sides. For this example, the length is 45. Multiply the length by 4 to calculate the diamond's perimeter.
421401
['Dist = 3949.99 * arcos(sin(lat1) * sin(lat2) + cos(lat1) * cos(lat2) * cos(long1 - long2)); ... ', 'long = atan(1)/45 * longdeg; lat = atan(1)/45 * latdeg; ... ', 'VALUE = (degrees) + (minutes/60) + (seconds/3600); ... ', 'proc cimport file="directory\\zipcode.']
569852
It is known that the arc length is equal to the circumference for an angle equal to 360 degrees or 2π radians. From this information, it can be determined that \frac{L}{\theta } = \frac{C}{2\pi}.
640524
An arc is a segment of a circle. An arc measure is the measure of an angle that the arc creates in the center of a circle, while an arc length is the span of the arc. This measure can be given in degrees or radians. We can easily convert between the two using the fact that pi radians = 180 degrees.
469984
Hence the area of the segment (minor) can be calculated by subtracting the area of the triangle from the area of the sector. The area of the major segment can be calculated by taking the area of the minor segment from the total area of the circle.
706807
['When we need to find length of a rectangle we need to divide area by breadth.', 'Length of a rectangle = Area ÷ breadth.', 'ℓ = A ÷ b.', 'Similarly, when we need to find breadth of a rectangle we need to divide area by length.', 'Breadth of a rectangle = Area ÷ length.', 'b = A ÷ ℓ']