SOLUTION: How do you draw this angle 2PI/9? i know that you need to convert it into degrees so what i got so far is 2PI/9 * 180/PI = 360PI/9PI i have no clue if im even on the right track so

Algebra ->  Trigonometry-basics -> SOLUTION: How do you draw this angle 2PI/9? i know that you need to convert it into degrees so what i got so far is 2PI/9 * 180/PI = 360PI/9PI i have no clue if im even on the right track so      Log On


   

Question 74754This question is from textbook McDougal Littell Algebra 2
: How do you draw this angle 2PI/9? i know that you need to convert it into degrees so what i got so far is 2PI/9 * 180/PI = 360PI/9PI i have no clue if im even on the right track so can you please help me? This question is from textbook McDougal Littell Algebra 2

Found 2 solutions by Earlsdon, jim_thompson5910:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
2%28pi%29%2F9+=+360%2F9 = 40degrees.
Remember! 2%28pi%29radians =360degrees.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
You can convert radians to degrees by this formula:
degrees=x%2A180%2Fpi
So if we plug in x=2pi%2F9 we get
degrees=%282%2Across%28pi%29%2F9%29%2A%28180%2Fcross%28pi%29%29Notice the pi terms cancel.
degrees=360%2F9=40
So 2pi%2F9 radians equals 40 degrees. You were on the right track, but you needed to divide the pi terms.