Ok I'm asked to find the other Trig. Functions given one value.

Here's the question:

sec = -2 tan > 0

So sec = 1/x, so I get 1/(-1/2) = -2.

If I'm understanding it correctly, x = cos, therefore x = -1 and r = 2?

Also since tan > 0, that means y is also negative since tan = y/x and x is already -1?

I just want to know if I'm understanding it correctly.

Thanks.