Jasper Yu => YSITD: cos(30)=sqrt(3)/2 cos(45)=sqrt(2)/2 cos(60)=sqrt(1)/2 #58fe19f6933ba140954e0550

Jasper Yu says to YSITD

cos(30)=sqrt(3)/2 cos(45)=sqrt(2)/2 cos(60)=sqrt(1)/2

at Mon, Apr 24, 2017 11:29 PM