Hi noamo48,
Instead of keeping 4.8 in decimal form, the video you watched used 4.8 = 24/5 (without saying it explicitly). If instead we write can you see how they got the final answer?
Let me know if anything is unclear. Good luck!
Hi all, this is my first post and I feel like I shouldn't even have to ask, but I'm having a tough time figuring this out. I watched an instructional video teaching how to solve for the arc of an angle and in the video, he divides a fraction and gets another fraction. My issue is I have no idea how he got the resulting fraction...
The expression was this (a = angle):
25pi/8 = 4.8a
125pi/192 = a
How does it simplify into a much larger number? According to the algebra I know, it's supposed to come out to 25pi/38.4 = a. What am I missing?
Thanks!
Hi noamo48,
Instead of keeping 4.8 in decimal form, the video you watched used 4.8 = 24/5 (without saying it explicitly). If instead we write can you see how they got the final answer?
Let me know if anything is unclear. Good luck!
One can also get the same result by just cross multiplication.
25 pi/8 = 4.8 a that gives a = [25pi/8 ] [ 1/(4.8)] = [25pi/8 ] [ 10/48]= [25pi/8 ] [ 5/24]= 125pi/192
In fact I recommend this method for it is simple and appears logical to me.