Posted by ndangoz on Thursday, April 25, 2013 at 4:42pm.
Evluate Cos22,5'

mathematics  Steve, Thursday, April 25, 2013 at 4:57pm
22.5 is half of 45
use your halfangle formula
Posted by ndangoz on Thursday, April 25, 2013 at 4:42pm.
Evluate Cos22,5'
22.5 is half of 45
use your halfangle formula