How do you evaluate $Tan((3pi)/4)$ ?

Question

7038 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-04-25T15:31:55

$tan((3pi)/4)=-1$

$(3pi)/4=pi-pi/4$

$a=pi$

$b=pi/4$

$tan(a-b)=(tan a-tan b)/(1+tan a*tan b)$

$tan((3pi)/4)=(tan pi-tan (pi/4))/(1+tan pi*tan (pi/4)$

$tan((3pi)/4)=(0-1)/(1+0*1)$

$tan((3pi)/4)=-1/1$

$tan((3pi)/4)=-1$

How do you evaluate Tan((3pi)/4) Tan((3pi)/4)?