A complete circle has 2π radians in it.

Thus, 360° should be equal to 2π radians.

Since 30° is 1/12 of a complete circle, 2π/12 = π/6 radians is the result.

Since 90° is 1/4 of a whole circle, 2π/4 = π/2 radians is the result.

One radian equals 180°/π = 57.30° because, to four significant digits, 90° = π / 2 radians.

Let’s investigate the value of pi divided by two radians.

In order to convert the angle’s degree value to its corresponding radians, multiply the supplied value by π/180.

For instance, in radians, 180 degrees is equal to π.

In an XY plane, one full counterclockwise revolution is equivalent to 2π (radians) or 360° (degrees).

This allows us to write: 2π = 360°.

Pi is therefore equivalent to 180 degrees.

We’ll learn about 2 pi radians 180 next.

Most of the time, an angle expressed in radians has a π in it. Therefore, we multiply an angle by π/180° to convert it from degrees to radians.

Angle in degrees × π/180° equals angle in radians.

180° in Radians is therefore Π. 360° = 2π 180° = π

180 degrees has a radian value of π.

180 × π/180 = π is the radian equivalent of 180 degrees.

What is known as 2π is the next topic.

The problem is that since π is a poor number, the entire foolish day devoted to celebrating it is also awful.

But tau, the alternative circle constant denoted by the Greek letter τ and equal to 2π, or around 6.28, is what we should celebrate instead of pi.

The problem is that diameter isn’t really how we define circles. Half of the diameter, or the radius, is what we use.

Upon entering that value into our circle constant formula, we obtain a new circle constant that is equal to 2π, or 6.28318530717…, which is often known as tau (or Greek letter τ).

You could be thinking that arithmetic will undergo drastic, seismic shifts as a result of this.

To begin with, though, π isn’t exactly something we employ in regular math problems.

Furthermore, switching from π to τ is advantageous from a mathematical standpoint for numerous reasons if you frequently work with π.

Let’s investigate the value of 2 pi radians on a unit circle.

Thus, 2π/2 = π radians is equal to half a rotation.

A straight angle, which is one-quarter of a rotation, is equal to 2π/4 = π/2 radians.

The measurement of three quarters of a revolution is 3 × π/2, or 3π/2 radians.

The angle that splits the first quadrant in half is equal to one eighth of a revolution; it is half a right angle, or (π/2)/2 = 2π/8 = π/4 radians.

π/2 + π/4 = 3π/4 radians, π + π/4 = 5π/4 radians, and 3π/2 + π/4 = 7π/4 radians are the angles that divide the remaining quadrants.