tan(π/4-x) 化简
求tan(x+π/4)的定义域
化简tan(18-x)tan(12+x)+根号3[tan(18-x)+tan(12+x)]
1)tan(x/2+π/4)+tan(x/2-π/4)=2tanx
tan(X/2+π/4)+tan(x/2-π/4)=2tanx?
求证:tan(x/2+π/4)+tan(x/2-π/4)=2tanx
高一数学y=tan(x+π/4)+1/tan(x+π/4)
tan( x/2+π/4)+tan(x/2-π/4 )=2tanx
tan(x/2+ π4)+tan(x/2- π/4)=2tanx
化简2cos*2-1 / 2tan(π/4-x)sin*2(π/4+x)
化简:{[tan(π/4+a)-tan(π/4-a)]/tan2a} *tan(π/4+a)
化简[sin(180+x)-tan(-x)+tan(-360-x)]/[tan(x+180)+cos(-x)+cos(-
limx趋于0,求tan(x+πsinx/4x)