tan(-35π/6)*sin(-46π/3)-cos37π/6*tan55π/6怎么做
问题描述：
tan(-35π/6)*sin(-46π/3)-cos37π/6*tan55π/6怎么做
答
答案是应该0吧 有点忘了 你看看对不对 还有你的公式不熟哦 这道题挺简单的 记熟公式就行了tan(-35π/6）=tan(-35π/6+6π）=tan(π/6)=三分之根号三sin(-46π/3）=sin(-46π/3+16π）=sin（2π/3）=sin(π/3)=二分之...