Question

why there is need to change degree to radian?​

Answer 1

They are two ways of expressing angles. One is not superior to the other. Some math formulas (and thus Unity functions) expect or output values in degrees, others expect or output values in radians. Radians are directly related to pi, and can be thought of as naturally occurring units when dealing with trigonometry.❣️

Answer 2

They are two ways of expressing angles. One is not superior to the other. Some math formulas (and thus Unity functions) expect or output values in degrees, others expect or output values in radians. Radians are directly related to pi, and can be thought of as naturally occurring units when dealing with trigonometry.