20/6 because 20 x 3 = 6 x 10 = 60. 309 is equivalent to 10/3 because 30 x 3 = 9 x 10 = 90.
40/12 is equivalent to 10/3 because 40 x 3 = 12 x 10 = 120.
I would be glad to help you, however what is the function?
99.69/100=.9969
.9969*20=19.938
Ramon would receive ~ $19.94
First of all i think theres a mistakein the question;
i think it is sin θ =

and then sin 30° =

thus θ= 30°