Conversion of radian system and angle system Let the radian number of an angle be a and the angle be n degrees, then a (RAD) =?

Conversion of radian system and angle system Let the radian number of an angle be a and the angle be n degrees, then a (RAD) =?

npai/180

Find the conversion formula between radian system and angle system of trigonometric function?

Pie equals 180 degrees
1 ° equals 180 parts pie
One radian is equal to 180 cents, which is about 57.3 degrees

Conversion formula between angle value and radian system

Angle = 180 ° × Radian ÷ π
Radian = angle × π÷180°

What is the derivation of the conversion formula between radian system and angle system?

Radian system 2 π = angle system 360 °
So radian system 1 = 360 ° / (2 π) = (180 / π) °
Angle system 1 ° = 2 π / 360 = π / 180

If a chord divides the circumference into two arcs of 2:3, the degree of the center angle of the inferior arc is -----, and the degree of the center angle of the arc is -----

If a chord divides the circumference into two arcs of 2:3, the degree of the inferior arc to the center angle A2 is -----, and the degree of the arc to the center angle A1 is -----
A1:A2=2:3
A1+A2=360°
A1=360°-A2
(360°-A2)/A2=2/3
3*(360°-A2)=2*A2
1080°-3*A2=2*A2
5*A2=1080°
A2=216°
A1=360°-A2=360°-216°=144°
If a chord divides the circumference into two arcs of 2:3, the degree of the inferior arc to the center angle A2 is 216 °, and the degree of the arc to the center angle A1 is 144 °

Arc length formula and sector area formula Let the arc length of the sector be l and the center angle be α (radian), if the radius is r, then l =? S Fan =?

There are two formulas for sector area