Question

prove the identity. show all work. tan(x-pi/4)=tanx-1/tanx+1

Answer 1

know tan (A-B) formula ?

Answer 2

tanx-tany/1+tanxtany

Answer 3

\(\large tan(A-B)= \frac{tan A-tan B}{1+tan Atan B}\)
what would u put A and B as ?

Answer 4

thats correct, put x=? , y= ?

Answer 5

a=x b=pi/4

Answer 6

correct, what is tan pi/4= ?

Answer 7

1

Answer 8

now just plug in values...

Answer 9

got it !(:

Answer 10

good :)