Radians to Degrees
Proportions
Degrees to Radians
Factoring
100

3π/4

135°

100

7/2 = x/8

28

100

300°

5π/3

100

3x4 - 9x5 = 0

x=0 , x=1/3

200

5π/2

450°

200

4/x = 2/7

14

200

30°

π/6

200

x2 - 64 = 0

(x+8)(x-8)

300

π/3

60°

300

k-9/9 = 9/10

17.1

300

140°

7π/9

300

x2 + 14x + 49 = 0 

(x+7)(x+7)

400

7π/4

315°

400

x-1/6 = 13/19

5.1

400

315°

7π/4

400

x2 - 12x + 27 = 0

x-3 , x-9

500

-4π

720°

500

3/x+1 = 2x/8

x=-4 & x=3

500

45°

π/4

500

2x2 + 5x + 3 = 0

(x+1)(2x+3)