The computer has four states: Norm, Fix, Eng and Sci, and its functions are: specifying index mark range, setting decimal places, engineering calculation and setting effective digits. If the calculator is in the other three states, an operation error may occur.

1, Deg is the state that the calculator angle is set to degrees, and there are six kinds of * * *:

2. Deg—Specify Deg as the default unit.

3.Rad specifies radian as the default unit.

4. GRA-Specifies the gradient as the default unit. Also called "percentile" and "newness".

5, find the calculation mode switch can be eliminated!

1, as we know, the central angle of the circumference of 1/360 is called 1 degree angle, which is recorded as 1 degree, 1 degree =60 minutes (1 degree = 60'),/kloc. The unit system for measuring angles in degrees is called an angle system.

2. Because the angle system is hexadecimal, it is often difficult to convert units when calculating the addition and subtraction of two angles. Therefore, in mathematics and scientific research, another method is often used to measure angles: the central angle of an arc with a long radius is called 1 radian angle, and it is recorded as 1(rad).

3. For the convenience of calculation, 1 radian =206265 seconds, which is often quoted directly.

4.rad is called radian angle, which is very commonly used in mathematical calculation and physical calculation. Conversion method of radian and angle: 1rad= 180/pi. 1 radian is approximately equal to 57.3 degrees.

References:

Baidu encyclopedia rad