​Help please

I stole this one from Melody..........you can see the methodology  in  her answer to your other post

Here's the graph :

It is first 41° at  t ≈ 6.25 hrs  after midnight ≈ 6:15 AM

Yep

solve

\(9sin[\frac{2\pi}{24}(x-8)]+45=41\)