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:
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We have: .
Pythagorus says: .
Now you can write all six trigonometric values.