Calculate tg (pi/2 -arctg(1/2)) = ?

1 Answer

giorgiana1976's profile pic

giorgiana1976 | College Teacher | (Level 3) Valedictorian

Posted on

Using the formula tg(pi/2 -k)=ctg k, we'll have:

tg[pi/2 - arctg(1/2)]=

= ctg (arctg(1/2))=1/tg(arctg(1/2))=1/(1/2)=2