sin4π/3×cos25π/6×tan5π/4的值是
1.化简sin25/12πsin11/6π-cos25/12πcos11/6π的值是
三角函数的计算题目cos25/3*π=tan(-15/4*π)
计算:sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3)
确定cos7/12π,sin(-465°),tan11/3π,sin3*cos4*tan5的符号
已知tan(Θ+π/4)=3,求1+sin4Θ-cos4Θ/1+sin4Θ+cos4Θ的值.
求值sin25π/6+cos25π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)-sin(-
1sin3分之4π乘以6分之cos25π乘以tan-4分之3π=
cos25πtdt (0~π/4)的微积分怎么求?
cos25π/3等于?请告诉我具体的方法,O(∩_∩)O谢谢
sin25π/4+cos25π/3+tan(-25π/4)=
怎么用卡西欧计算器求三角函数的值?sin4π/3 cos(-8π/3)
sin25/6pai+cos25/3pai+tan(-25/4pai)