けんき => YSITD: 各位會解嗎((3^0.5)/2)sin(theta)+(1/2)cos(theta)=1 #58ccc96550aa9d04a2bc3e2d

けんき says to YSITD

各位會解嗎((3^0.5)/2)sin(theta)+(1/2)cos(theta)=1

at Sat, Mar 18, 2017 1:45 PM