SOLUTION: 1+ tanx / 1- tanx=? Ans)tan(45+x)

Question 924536: 1+ tanx / 1- tanx=?
Ans)tan(45+x)
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
{1+ tanx / 1- tanx=?
Ans)tan(45+x)
***

..
sin(45+x)=sin45cosx+cos45sinx=(√2/2)cosx+(√2/2)sinx=(√2/2)(cosx+sinx)
cos(45+x)=cos45cosx-sin45sinx=(√2/2)cosx-(√2/2)sinx=(√2/2)(cosx-sinx)
tan(45+x)=sin(45+x)/cos(45+x)=
..

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