math.rad

local result = math.rad(
    angle
)

Type	Name	Description
`number`	angle	Angle in degrees to convert

Type	Name	Description
`number`	result	Equivalent angle in radians

Convert 180 degrees to radians

local result = math.rad(180)

engine.print("info", result) -- 3.1415926535898

Convert 90 degrees to radians

local result = math.rad(90)

engine.print("info", result) -- 1.5707963267949

Convert 0 degrees to radians

local result = math.rad(0)

engine.print("info", result) -- 0.0

Convert 360 degrees to 2*pi

local result = math.rad(360)

engine.print("info", result) -- 6.2831853071796

Pass a degree value directly to sin

local result = math.sin(math.rad(30))

engine.print("info", result) -- 0.5

Rotate through 8 cardinal directions

for i = 0, 7 do
    local deg = i * 45
    local rad = math.rad(deg)
    engine.print("info", deg, rad)
end

Verify rad and deg are inverses

local original = math.pi / 3
local result = math.rad(math.deg(original))

engine.print("info", result) -- 1.0471975511966