Sine Function Story Problems Please Help Me With Theta And Extending The Sine Function ?

Please help me with theta and extending the sine function ? - sine function story problems

My teacher is not taught that to us and said: I ask many questions. I searched everywhere on the Internet trying to understand this, but I found nothing useful.

How can you solve the uterus?
And how to find other angles of 360 - (-360)?

Can any angle of less than 360? For example, 270?

I am very confused about the concept of expansion of the sine function.

Thank you in advance.