16.单选题-|||-已知 sin (36.9)^circ =0.6 ,cos (36.9)^circ =0.8 。将复数 =1-|||-angle -(36.9)^circ 从相量形式改写成代数式(直角坐标式)-|||-为() ()-|||-A .-dot (1)8-|||-B .+dot (1)8-|||-C .-dot (1)6-|||-D .+16

sin (20)^circ cos (10)^circ -cos (160)^circ sin (10)^circ =-|||-()-|||-

2.已知:如图,在 Delta ABC 中, angle BAE=angle CAE angle ADC=(90)^circ angle B=(40)^cir

(湘教版第二册P1122习题3.4第2题,改-|||-编)(数学运算)复数 =(cos (25)^circ +-|||-sin (25)^circ )(cos

dfrac (sqrt {3)}(2)sin (15)^circ +dfrac (1)(2)cos (15)^circ 的值为( )A．dfrac

^circ +(25)^circ =-|||-^circ +(81)^circ =-|||-^circ +(140)^circ =-|||-^circ -(25

如图,在 Delta ABC 中, angle BAE=angle CAE ,-|||-angle ADC=(90)^circ angle B=(40)^ci

(单选题)剪刀撑与地面夹角为45^circ sim 60^circ，搭接长度不小于（ ）A. 400mmB. 1000mmC. 1500mmD. 1800mm

6、已知 =sqrt (xln xsqrt {1-sin x)} ,则 ^circ = .__

[题目] Delta ABC 中-|||-angle B=angle A+(10)^circ angle C=angle B+(10)^circ 求 Del

画下面各角。-|||-^circ -|||-^circ -|||-^circ