Thread: Trinagle, using Sin to solve

Hi,
I was confused about how to use Sine, Cosine, and Tangent a bit.
So I thought of using like a regular triangle like this.

So I want to find what sin Ө=
But I'm kind of confused
Sin is opposite over hypotenuse (Using SOHCAHTOA)
So the opposite has no numbers, and the hypotenuse is 1
So then I used cosine Ө = adjecent over hypotenuse, which is x/1, which got me no where.

Can someone explain to me on how I could find what sin Ө equals.

Pythagoras.