Step-by-step explanation:
first u find the angles and then u use some low divide the length of triangle by sin of opposite angles
A circle is 360 degrees so 360 divided by 20=18 so 20 degrees is one 18th of a circle
I'm pretty sure the answer is "A matrix separates rational and irrational numbers." (Note: I'm not that great with memorizing definitions, but I'm pretty sure.) Hope this helps :)
Your answr is n=8. if this helped plz mark brainliest