Two laser beams originating from the same source pass through a glass cylinder parallel to its base . The arc intercepted by the lasers closest to the source measures 60 . The arc intercepted by the lasers on the other side of the cylinder measures 80 . What is the measure of the angle formed by the two laser beams ? A.)10
B.)20
C.)30
D.(40

26

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

8(1/6)

step-by-step explain:

49/6= 48

8 (1/6)