Sometimes they are on pushbikes.
Look here
https://www.dummies.com/education/science/biology/locomotion-and-microbial-cells/#:~:text=In%20prokaryotic%20cells%2C%20flagella%20spin,propel%20the%20cells%20more%20slowly.&text=Bacteria%20without%20flagella%20can%20also,type%20of%20motion%20called%20gliding.
Yes, good spotting. :)
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If I am only dealing with real numbers then
x-2=1
x=3
or
x-2 could be -1 if 25-x^2 is even
if x=1 25-x^2 = 24 and that is even
so
x=1 or x=3
Assuming the angels are in degrees:
because the first one is cos(100) which is in the second quadrant so it is negative.
and
the second one is 5cos(20) = pos since cos(20) is positive.
ok you have 2 answers, both are the same.
the radius is 2/pi
so the circumference is 2pi*2/pi = 4
So a quarter of the circumference is 1
2/pi + 1 + 2/pi = 4/pi +1
I get the same answer as Riemann
No one other than you will have access to this.
That is ok.
The way I have done it is by far the easiest way
BUT
I can help you with the way your teacher wants as well.
Let me know if you still want help.
Send me a private message as I may not see your post.
+118713 
