化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/22 14:16:41
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)化简【1+sinθ-cosθ/1+sinθ+cosθ】+
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
原式=[(1-cosθ)+sinθ]/[(1+cosθ)+sinθ]+cot(θ/2)
=[2sin²(θ/2)+2sin(θ/2)cos(θ/2)]/[2cos²(θ/2)+2sin(θ/2)cos(θ/2)]+cot(θ/2)
=[2sin(θ/2)*(sin(θ/2)+cos(θ/2))]/[2cos(θ/2)(sin(θ/2)+cos(θ/2))]+cot(θ/2)
=sin(θ/2)/cos(θ/2)+cos(θ/2)/sin(θ/2)
=[sin²(θ/2)+cos²(θ/2)]/[sin(θ/2)cos(θ/2)]
=1/(1/2*sinθ)
=2cscθ
化简:1+sinθ+cosθ+2sinθcosθ /1+sinθ+cosθ
f(θ)=【sinθcosθ/(sinθ+cosθ+1)】+sinθcosθ化简
化简[sinθ(1+sinθ)+cosθ(1+cosθ)]*[sinθ(1-sinθ)+cosθ(1-cosθ)]-sin2θ
化简1+cosθ-sinθ化简(1+cosθ-sinθ)/(1-cosθ-sinθ)+(1-cosθ-sinθ)/(1+cosθ-sinθ)(1+cosθ-sinθ)/(1-cosθ-sinθ)+(1-cosθ-sinθ)/(1+cosθ-sinθ)
化简(sinθ-cosθ)/(tanθ-1)A.tanθ B.sinθ C.-sinθ D.cosθ
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
化简1+sinθ-cosθ/1+sinθ+cosθ详细过程.
化简(1+sinθ+cosθ)/(1+sinθ-cosθ)谢谢!急!今晚作业!务必!
化简2cosθ/√1-sin^2θ+√1-cos^2θ/sinθ
化简cosθ/(1+sinθ)+(1=sinθ)/cosθ怎么化简啊
化简y=1+cosΘ-sinΘ/1-cosΘ+sinΘ
求证sinθ/(1+cosθ)+(1+cosθ)/sinθ=2/sinθ
2sinθ = cosθ + 1,怎么求sin
为什么sin2θ+sinθ=2sinθcosθ+sinθ=sinθ(2cosθ+1)
2sinθ-cosθ=1 (sinθ+cosθ+1)/(sinθ-cosθ+1)如题已知2sinθ-cosθ=1 求(sinθ+cosθ+1)/(sinθ-cosθ+1)
化简:[(1+sinθ+cosθ)(sinθ/2-cosθ/2)]/(√2+2cosθ) (0
三角恒等变换,化简:(1+sinθ+cosθ)(sinθ/2-cosθ/2)/√2+2cosθ
求证:(1+sinθ-cosθ)/(1+sinθ+cosθ)=sinθ/(cosθ+1)