Simulink generating sine waves

I have this question but my problem is I cant find 3 fundamentally different solutions. This is the one I currently have:

Answer 1

[Raj]

You can use the "Matlab Function" block to write your equation and get the output. That's one way.

[madhan ravi]

Yes that sums up to two different ways wondering what the other way could be.

[Raj]

Not sure whether these would be considered as another way of implementation:

1) Expand sin(0.5t+0.25) as sin(A+B) formula.

2) Modify the equation as sinA-sinB formula where A=0.5t and B=0.5t+0.25

Basically get a new equation and implement that.