Question

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

I need the work pleasee

Answer 1

@cwrw238 @hartnn @ganeshie8 @Jaynator495 @amistre64

Answer 2

what have you attempted so far?

Answer 3

I need an identity to substitute in

Answer 4

nothing

Answer 5

what identities do you know of?

Answer 6

pythagorean and reciprocal identities

Answer 7

look up sum of angles, and also how tan is made from sin and cos

Answer 8

i know that

Answer 9

then you're ready :)

Answer 10

tan =sin/cos

Answer 11

but i dont know how to solve it

Answer 12

sin(a+b)
and
cos(a+b)

these should help out the left side

Answer 13

theres no point in giving me that because i dont know what to do with them