Find the reference angle
5) -490 degrees
6) 31pi over 18
(31pi/18)
find a positive and negative coterminal angle for each given angle
7) 116 degrees
8) 19pi over 18
(19pi/18)

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11