> 数学 >
求值sin7π/3cos(-23π/6)+tan(-11π/4)cos13π/3
人气:486 ℃ 时间:2020-06-03 18:03:36
解答
=sinπ/3cos(π/6)+tan(π/4)cos(π/3)
=0/3cos(π/6)+1*(1/2)
=1/2
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版