Question

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

Answer 1

This is actually a one - sided limit:

If you look at the graph of tan(x) at π/2. The value just right of π/2 is -∞ and The value just left of π/2 is ∞.

So, lim(x → (π/2) + ) = -∞
lim(x → (π/2) - ) = ∞

So, overall the limit doesn't exist!

Hope this helps! :)

Answer 2

Wait, so can I have a step by step example of what exactly I have to do? I have to show my work and I don't really get it.

Answer 3

Oh, never mind. I got it. Thanks!!

Answer 4

yw

Answer 5

the question is asking to verify the identity written not finding limit

Answer 6

So what do you think you should do? what's your thoughts?
have you any practice in trigonometry?

Answer 7

oops