化简:sin(3a-TT)/sina+cos(3a-TT)/cosa

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 10:40:57
化简:sin(3a-TT)/sina+cos(3a-TT)/cosa

化简:sin(3a-TT)/sina+cos(3a-TT)/cosa
化简:sin(3a-TT)/sina+cos(3a-TT)/cosa

化简:sin(3a-TT)/sina+cos(3a-TT)/cosa
sin(3a-TT)/sina+cos(3a-TT)/cosa
=(sin(3a-TT)cosa+cos(3a-TT)sina)/(sinacosa)
=sin(3a-TT+a)/sinacosa
=2sin(4a-TT)/sin2a

-4cos2a