Question

in the figure, angle aob, is a staright line, if angle aoc = 40 degree , angle cod=4x degree and angle bod=3x degree then angle cod =​

Answer 1

Answer:

80

Step-by-step explanation:

ASP=180

40+4x+3x=180

7x=180-40

7x=140

x=140/7

x=20

cod or 4x=4X20=80

Answer 2

Answer:

80 degree

Step-by-step explanation:

angle aoc =180 degree

therefore

angle aoc+angle cod+ angle dob=180

=> 40 degree + 4x degree+ 3x degree =180

=> 40 + 7x =180

=> 7x = 180 - 40

7x = 140

x= 140/7

x= 20

therefore angle cod= 4* 20

i.e. angle cod= 80degree