根号【4-2tan(-37π/6)+tan(-43π/6)的平方+3sin(-17π/2)】
=根号【4-2tan(-π/6)+tan(-5π/6)的平方+3sin(-π/2)】
=根号【4+2tan(π/6)+tan(5π/6)的平方-3】
=根号【1+2tan(π/6)+tan(π/6)的平方】
=根号【(1+tan(π/6))^2】
=1+tan(π/6)
=1+√3/3
根号【4-2tan(-37π/6)+tan(-43π/6)的平方+3sin(-17π/2)】
1个回答
相关问题
-
求值:2cosπ/2-tanπ/4+3/4tan²π/6-sinπ/6+cos²π/6+sin3π/
-
计算：cox（π/3）－tan（π/4）＋（3/4）tan（π/6）－sin（π/6）＋cos（π/6）...
-
化简√3sin（-1200°）tan11π/6-cos585°tan（-37π/4）＝
-
sin^2π/3+cos^43π/2+tan^2π/3=
-
sin-3π/4= cos11π/6= tan13π/4= sin7π/2= cos-3π/2= sin10π/3=
-
tan(π/6 -θ )+tan(π/6+θ)+根号3tan(π/6-θ)tan(π/6+θ)化简这个式子,
-
求值sin(π/2)*sin(π/3)+2cos(-π/2)-根号3*tan(π/3)
-
tan（13π/3）+sin(-5π/2)+cos(-23π/6)
-
求值cos9π/4+tan(-11π/6)-sin9π/4+tan(--11π/3)
-
2sin ^2(19π/4）+tan^2（8π/3)*tan(-7π/4）