In a circle, if the measure of a central angle is 120 degrees, then the ratio of the length of the corresponding arc to the circumference is: A. 1/3 B. 1/2 C. 2/3 D. 1/4 相关知识点: 试题来源: 解析 A。因为圆心角为 120 度,圆的圆心角为 360 度,弧长与圆心角成正比,所以 ...
Use the formul a for radian measure to calculate the measure of a central angle in a circle having a radius of 12 cm and intercepting an arc of 21 cm The angle has a measure of radians. 相关知识点: 试题来源: 解析 Q=s/r=(21)/(12) 1.75 radians ...
【题目】T he value of the variable in the angle measure in the circle is also equal to the radius , ofthe circle. If a circle's diameter is twice its radius. what is the diameter of the circle?)A. 22.5 unitsB. 45 unitsC. 90 unitsD. 112.5 units ...
(Math.)that in which the unit angle has its measuring arc equal to the radius of the circle. See also:Arcual Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co. Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or vis...
When a question asks about the arc, use the formula ((arc))((circumference))=((central angle))(2π) with the measure of the central angle in radians. Since you're literally looking for the fraction of the arc's length to the circumference of the circle, all that is needed to solve...
Answer to: Circle A has a radius of 24 cm and the measure of angle BAC in the circle is 60^o. What is the area of the sector BAC of the circle? By...
A radian is a unit of measurement of an angle that can be defined as the measure of an angle that subtends an arc with a length of exactly one radius. This definition will be explained in more detail below. Review of Circle Terminology The center of a circle is, as the name suggests...
Find {eq}m \angle A {/eq}. Round your answer to the nearest tenth. Law of Sines: The law of sines is a relationship between the sides of a triangle and their opposite angles. For example, if we have the length of two sides of the triangle (a and b), the measure o...
百度试题 结果1 题目【题目】The radius of a circle is 15 feet. What is theangle measure of an arc feet long?=π ftr=15 ftGive the exact answer in simplest form. 相关知识点: 试题来源: 解析 【解析】a_n=e/(360)*2πx 反馈 收藏 ...
5.standpoint; point of view:look at the question from another angle;the angle of a newspaper article. 6.informala selfish or devious motive or purpose 7.(Building) Seeangle iron vb 8.to move in or bend into angles or an angle