θ=arctan(4/3)=53.13° 怎么算出53.13°的

arctan(-2)+arctan(-3)=? θ=arctan(4/3)=53.13° 怎么算出53.13°的 arctan(tanθ)=? cos[1/2arctan(-3/4)].cos[1/2arctan(-3/4)]= 用复变函数证明arctan (1/2) + arctan (1/3) =π/4 π－arctan(3/2)－arctan(2/3)=? 求证：arctan 1/2+arctan 1/5+arctan 1/8=π/4 -arctan(-x)=-pai+arctan么? cos[arctan(1/2) - arctan(-2)]=? 求解三角函数方程:Arctan(6/x)+Arctan(4/x)=π/4Arctan(6/x)+Arctan(4/x)=π/4记得说明过程 arctan(sin x)=? arctan(tanx)=? arctan(-5.671)=? arctan(4*w)+arctan(5*w)=5怎样求w π/2=arctan(4/x)+arctan(50/x) 求x arctan x分之2+arctan x分之3=45 怎么求出X来啊啊? arctan(x/12)-arctan(x/10)-arctan(x/20)=-40最好能用matlab解.arctan(x/12)-arctan(x/10)-arctan(x/20)=-40/180*pi tan[arctan(-根号3/3)] 和 arctan(tan3兀/4)