1, to understand the specific degree of obtuse angle, we must first understand the concept of angle. Angle is used to measure the angle formed by the intersection of two rays or line segments at the same point. In geometry, angles are usually expressed in degrees, where 1 degree represents a full circle of 1/360. Therefore, the degree range of obtuse angle is more than 90 degrees and less than 180 degrees.
2. The obtuse angle is not only applied in geometry, but also closely related to our daily life. For example, when we describe the angle of an object, if the angle is too big or too small, we may use the word "dull" to describe it. For example, if the edge of a blade is not sharp enough, we can say it is "dull".
3. In the field of architecture and engineering, obtuse angles also have important applications. For example, when designing a building, designers need to consider various angles and shapes to ensure the stability and functionality of the building. If the angle is too large or too small, it may lead to the instability of the building or fail to meet the functional requirements.
Knowledge about obtuse angle
1, definition: obtuse angle refers to an angle greater than 90 degrees but less than 180 degrees. In geometry, the obtuse angle is ">; 90-degree OR
2. Properties: The values of sine and cosine of obtuse angle are less than 0, because the definitions of sine and cosine are negative. The tangent of the obtuse angle can be greater than 0 or less than 0, depending on the angle. The complement of an obtuse angle is an acute angle. The obtuse angle can also be divided equally. For example, if an angle is 120 degrees, it can be divided into two angles of 60 degrees.
3. Representation method In mathematical symbols, obtuse angles are usually represented by "obtuse angles". For example, an obtuse angle can be expressed as ">: 90 degrees" or "