(1+cotx)divide(1+tanx)=5

[inland plank]

<@&962633355730513930>

<@&962633355730513930>

yeh so idk why tan=-1 is not correct

[silver loom]

substitude back to the original equation

it is 0/0, undefined

[inland plank]

@silver loom but how comes that is an answer when i multiply by tan x

[silver loom]

you muliply by (1+tan x)

which is 0 if tan x = -1

[inland plank]

oh so the best way to anwswer these questions is to change tan into sincos to avoid this

[silver loom]

ahh may be not

fake answer usually happens

easiest way tis to substitute all answer back to the original equation

[silver loom]

you may still accidentally multiply by 1+sin x and sin x -1 anyway

[inland plank]

alreat thanks