MATH EQUATIONS

Coterminal angles (degrees)

(+ and -) 360 (goes first)

Coterminal angles (radians)

( + and -) 2π (goes first)

Complementary angle

180

Supplementary angle

90

Complementary radians

π

Supplementary radians

π/2

degree to radians

x π/180

radians to degree

x 180/π

Area of a sector (angles)

A= π rsqaured( angle/ 360)

Area of sector (Radians)

A= ½ rsquared angle

Length of arc (angle)

S= 2πr( angle/ 360)

Length of arc (radians)

S=r angles

Radius + arc length ( radius measure)

angle= s/r