di I can find that AC^2=2(1-cos 4pi/7) but I can't find AD^2.
S SKY KEUNG New member Joined Jul 5, 2017 Messages 7 Jul 6, 2017 #1 di I can find that AC^2=2(1-cos 4pi/7) but I can't find AD^2. Attachments IMG_4255.jpg 479.5 KB · Views: 2
D Deleted member 4993 Guest Jul 6, 2017 #2 SKY KEUNG said: di I can find that AC^2=2(1-cos 4pi/7) but I can't find AD^2. Click to expand... How did you find that? Please share work.
SKY KEUNG said: di I can find that AC^2=2(1-cos 4pi/7) but I can't find AD^2. Click to expand... How did you find that? Please share work.
