Write an expression that can be used to determine all of the coterminal angles of an angle that measures 240

(240°)n, where n is an integer
240° + (360°)n, where n is an integer
240° + (180°)n, where n is an integer
240° + (90)n, where n is an integer

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation: