解析 B。中文解析:有一个角等于 90 度的三角形是直角三角形(right-angled triangle),acute-angled triangle(锐角三角形)三个角都小于 90 度,obtuse-angled triangle(钝角三角形)有一个角大于 90 度,isosceles triangle(等腰三角形)是按边分类的。反馈 收藏 ...
A method and an apparatus or pressing groove section with a bending angle smaller than or equal to 90 degrees are provided. The apparatus comprises an upper convex die and a lower concave die are used for processing. The convex die comprises an expansion sleeve and an expansion core which ...
题目An angle of 45 minutes is equal to ___ degrees. A. 0.75 B. 0.25 C. 1.25 D. 0.5 相关知识点: 试题来源: 解析 A。因为 60 分钟等于 1 度,所以 45 分钟等于 45÷60 = 0.75 度。选项 B、C、D 计算结果错误。反馈 收藏
If an angle measures 1800 seconds, it is equal to ___ degrees. A. 0.5 B. 5 C. 30 D. 50 相关知识点: 试题来源: 解析 A。因为 1 度等于 3600 秒,所以 1800 秒等于 1800÷3600 = 0.5 度。选项 B、C、D 计算结果错误。反馈 收藏 ...
A full turn is equal to 2π radians, which is why the circumference is equal to 2πR. To make things easier for you, we created a table with the most common angles: Degrees Radians 15° π/12 30° π/6 45° π/4 60° π/3 90° π/2 180° π 270° 3π/2 360° 2π As...
3.(Mathematics) the extent to which one such line or plane diverges from another, measured in degrees or radians 4.an angular projection or recess; corner 5.standpoint; point of view:look at the question from another angle;the angle of a newspaper article. ...
For angles in the first quadrant, i.e., angles less than or equal to 90 degrees, the reference angle is equal to the original angle. What is the reference angle for 2pi? The reference angle for 2π is 0. This is because 2π is the same as 0 radians in terms of reference angle,...
This unit simplifies the measurements of right angles, as 90° is equal to 100 gradians. Right angles in gradians GradiansDegrees 0 grad0° 100 grad90° 200 grad180° 300 grad270° 400 grad360° How to Convert Gradians To convert gradians to another unit of angle, you need to multiply...
The triangle has 180 degrees. If a triangle has a 90-degree angle, the other angles equal a sum of 90 degrees. The values may be equal, e.g. they both have 45-degree angles, or they could vary, e.g. 30 degrees and 60 degrees. There are different types of triangles depending on...
Right angle is the angle formed by the intersection of two rays at an angle of 90 degrees. Learn more about right angles and properties with examples only at BYJU’S.