If \(\alpha<\beta\), how many different values are there among the following expressions? \[\sin\alpha\sin\beta \quad \sin\alpha\cos\beta \quad \cos\alpha\sin\beta \quad \cos\alpha\cos\beta\]
![A right-angled triangle with the other two angles labelled alpha and beta](/trigonometry-triangles-to-functions/r7973/images/q32angletriangle.png)
If \(\alpha<\beta\), how many different values are there among the following expressions? \[\sin\alpha\sin\beta \quad \sin\alpha\cos\beta \quad \cos\alpha\sin\beta \quad \cos\alpha\cos\beta\]