The angle is converted to 1 = π/ 180, 1 radian = 180/π. A week is 360 degrees, which is also 2π radians, which means 360 = 2π. Angle units are converted to hexadecimal, and the forward speed is 60. Degrees are large units and seconds are small units. Multiply it by the forward speed and divide it by the forward speed from small to large.

The origin of angle

As we all know, many human cultural heritages were born in the two river basins, and Jiao is one of them. Babylonians were good at astronomy, and their angles were inspired by long-term astronomical observation.

Babylonians found that the sun's orbit in vernal equinox for half a Sunday was exactly equal to 180 sun diameters. Inspired by this, they defined the circumference as 360 degrees and the straight angle as 180 degrees. The corner circle originally represented the sun. In addition, the definition of a straight angle is 180 degrees, which is closely related to the Babylonians' adoption of the hexadecimal method. Finally, because the divisor of 180 is greater than 100 or 200, it has been widely recognized internationally.