Question
Establish the following identity
tan(x+pi/4)=1+tanx/1-tanx
tan(x+pi/4)=1+tanx/1-tanx
Answers
drwls
Use the tan (x + y) formula.
tan(x+y) = (tanx + tany)/(1 - tanx tany)
with y = pi/4, tany = 1
Your right hand side should have parentheses
tan(x+y) = (tanx + tany)/(1 - tanx tany)
with y = pi/4, tany = 1
Your right hand side should have parentheses