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The sector isn't a question, and there's no answer to it. There are a few numbers that describe it, however, and they can be calculated like this: -- The circumference of the circle is pi x diameter = 12 pi cm -- The area of the circle is pi x radius2 = 36 pi cm2 -- 120 degrees is 1/3 of the circle. 360 ÷ 3 = 120 degrees Therefore the circle 360 degrees has been split into 3 parts of 120 degrees each. Asked in Percentages, Fractions, and Decimal Values What is 45 degrees as a fraction? 1/8 A circle has 360 degrees. 45/360 = 1/8 in fraction 1/8 of a circle. Asked in Geometry. A circle is 360 degrees. There are three 120 degree angles since 3x120 is 360. If you want, think of the first angle as the one between 0 and 120, the next as the one between 120 and 240 and the third as the one between 240 and 360. 06/02/2019 · We can measure Angles in Degrees. There are 360 degrees in one Full Rotation one complete circle around. Why 360 degrees? Probably because old calendars such as the Persian Calendar used 360 days for a year - when they watched the stars they saw them revolve around the North Star one degree per.

24/09/2011 · The area of a sector is m/360 pir^2 where m is the angle measure in degrees. The biggest problem I have with this is that the rope is 50 ft long, and the side of the hexagon is 40 ft. So if you swing an arc with a radius of 50, it won't be 120 degrees,. Most geometry students learn there are 360 degrees in a circle, 180 degrees in a semicircle and 90 degrees in a quarter of a circle. If you need to draw a certain angle in a circle, but can't "eyeball" the degrees, a protractor can help. If you are confused by the use of radians rather than degrees in a. What is sin 120 degrees? Trigonometry Right Triangles Trigonometric Functions of Any Angle. 1 Answer Nghi N. · Nghi N May 30, 2015 On the trig unit circle: sin 120 = sin 180 - 60 = sin 60 = sqrt3/2 Answer link. Related questions. How do you find.

Constructing a 60 degree angle, constructing a 30 degree angle, constructing a 120 degree angle and constructing a 90 degree angle using a compass. An activity involving a compass and a ruler. Year 8 Interactive Maths - Second Edition. Constructing Angles of 60º, 120º, 30º and 90º. You shouldn't rely on formulas if you can help it. This problem can be easily solved with coordinate geometry among many other approaches. I'll center the circle at the origin. I'll put vertex A at 0 degrees which is the point [math]A=3,0. A degree in full, a degree of arc, arc degree, or arcdegree, usually denoted by ° the degree symbol, is a measurement of a plane angle, defined so that a full rotation is 360 degrees. It is not an SI unit, as the SI unit of angular measure is the radian, but it is mentioned in the SI brochure as an accepted unit. In a similar fashion the measure of the angle RCP is 60 degrees and thus the measure of the angle RCQ is 120 degrees. Finally extend the line PC to meet the circle at.