若tanα=m 则sin(-5π-α)cos(3x+α)=
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 01:54:51
x){ѽ$1F\334tM7ۨ_a\}n=6IED/!d
i-P:QKC( h\}
+(QR@۞ $}:m/g.y{DT;С@@pl.H*7HF 1A q
若tanα=m 则sin(-5π-α)cos(3x+α)=
若tanα=m 则sin(-5π-α)cos(3x+α)=
若tanα=m 则sin(-5π-α)cos(3x+α)=
sin(-5π-α)cos(3π+α)
=sina*(-cosa)
=-sinacosa
=-sinacosa/(sin^2a+cos^2a) 分子分母同时除以 cos^2a
=-tana/(1+tan^2a) tanα=m
=-m/(1+m^2)
若tanα=m 则sin(-5π-α)cos(3x+α)=
M=sinα×tan(α/2)+cosα,N=tanπ/8(tanπ/8+2),则M与N的大小关系是A.M>N B.M=N C.M
若tanα-sinα=m,tanα+sinα=n,则cosα等于?
已知sinα=m-3/m+5,cosα=4-2m/m+5,若α∈(π/2,π),则tanα/2的值
●若M=sinαtan(α/2)+cosα,N=tan(π/8)〔tan(π/8)+2〕,则M、N的关系是A.M>N B.M=N C.M<N D.与α有关
已知锐角α,β满足:sinα-cosβ=1/5,tanα+tanβ+√3tanαtanβ=√3,则c
三角函数(求详细过程)(1)、根号下1-sinα/1+sinα=sinα-1/cosα,则x是?象限角(2)、tanα=m(m不等于0)且sinα=4-2m/m+5,求m和tanα(3)、若sinα*cosα=1/2,求tanα+cosα/sinα(4)、已知:0
tanα=m,则sin(α+3π)+cos(π+α)/sin(-α)-cos(π+α)等于?
设tan(5π+α)=m,求[sin(-α)-cos(π+α)]的值
设tan(5π+α)=m 求sinα-cosα的值
已知m>0,且mcosα-sinα=根号5*sin(α+φ),则tanφ=
若tan(π+α)=m,3π/2<α<2π,则sin(π-α)=
1.已知cos(π/6-α)=1/3,求sin(2/3π-α) 2.求证tan^2α-sin^2α=tan^2α-sin^2α3.若sinx=(m-3)/(m+5),cosx=(4-2m)/(m+5),x属于(π/2,π),求tanx4.化简[tan(π-α)*sin^2(α+π/2)*cos(2π-α)]/[cos^3(-α-π)*tan(α-2π)]
若α∈(-π/2+2kπ,2kπ)(k∈Z),则sinα,cosα,tanα的大小关系是A.tanα>sinα>cosαB.tanα>cosα>sinαC.tanα<sinα<cosαD.tanα<cosα<sinα
若tan(5π+α)=m,求sin(-α)-cos(π-α)/sin(α-5π)+cos(π+α)的值
设tan(5π+α)=m,则sin(α-3π)+cos(π-α)/sin(-α)-cos(π+α)的值为
若a属于(0,π/2)试比较tanα、tan(tanα)、tan(sinα)
若sin (π/4+α)sin(π/4-α)=-1/8,则2sin²α+tanα-1/tanα-1的值为