the original fraction would be 4:5 divided by 2 and 1 making the answer clear and then what you do is take your answer multiplying it by the improper fraction and subtracting it by the mixed and the others that you should know and then you get your real answer.
Have a good day!
It might seem confusing but it is actually correct, how do i know?
i´m a math prodigy.
Attached is a pic of the graph
Using the Sine Rule:-
20 /sin 45 = BC / sin 30
BC = 20 sin 30 / sin45
= 20 * 1/2 / 1 / sqrt2
= 20 * 1/2 * sqrt2
= 10 sqrt2 answer
The answer is r = 40 because 40 divided by 10 = 4
