sin16°=0.2756，cos16°=0.9613，sin65=0.8268，cos65= —0.5626，sin65°=0.9063cos65°=0.4226
sin16°=0.27564cos16°=0.96126sin65°=0.90631cos65°=0.42262
0.2756 0.96130.9063 0.4226
不懂。
