Question

Verify the Identity
cot(x + pi/2) = -tan x

Answer 1

@AriPotta @iGreen Please help :/

Answer 2

I know that pi/2 would be 0 and the equation would end up like this cot x = -tan x but I do not know what to do after that...

Answer 3

@satellite73 Could you help me out after you're done with that question?

Answer 4

do you know cotangent function or even the tangent function or both odd functions?

Answer 5

cotangent function as in cot x= 1/tan x? and tan x = 1/ cot x?

Answer 6

ok odd function as in tan(-x)=-tan(x)
and so on..
but nevermind
you could write cot in terms of cos and sin and use the sum identities

Answer 7

\[\frac{\cos(x+\frac{\pi}{2})}{\sin(x+\frac{\pi}{2})}=?\]

Answer 8

expand the top and bottom

Answer 9

i will brb
i think @TylerD is here to help also