Hello, dagbayani481!

We know that tangent is negative in quadrants 2 and 4.

We know that sine is positive in quadrants 1 and 2.

. . Hence, is in quadrant 2.

Code:* \ \ \ @ - - - - * - - -

We know that: .

So the diagram looks like this:

Code:* |\ 4 | \ | \ @ - - * - * - - - -1

We have: .

Pythagorus says: .

Now you can write all six trigonometric values.