Question

Verify the identity.

cotx minus pi divided by two. = -tan x

Answer 1

\[\cot \left( x-\frac{ \pi }{ 2 } \right)=-\tan x\]

Answer 2

@Luigi0210

Answer 3

yay :D

Answer 4

It's an identity.. just take out the negative.

Answer 5

so cot(x+\pi\2)=tanx

Answer 6

\[-\cot \left( \frac{ \pi }{ 2 }-x \right)=-\tan x\]
\[-(tanx)=-tanx \]
\[-tanx=-tanx\]

Answer 7

you said take out the negative! and then you went and used negatives in every single one of those

Answer 8

Yea, factor it, don't kill it

Answer 9

what? how do even factor crap like... you turned an equation into -tanx, what?

Answer 10

http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Answer 11

.-. why does math have to have so much hard stuffs

Answer 12

It's not hard really.

Answer 13

Just practice.

Answer 14

ugh .-. it is for me... too much memorizing stuff

Answer 15

Well better get started now if you're gonna move on in math c:

Answer 16

yeah :c