I hope this is what you're looking for. Sorry for my writing, I did it with the mouse lol.
Answer:
4 hours
Step-by-step explanation:
cross multiply
Answer:

Step-by-step explanation:
300 degrees is in the fourth quadrant (it's between 270 and 360); sine is negative in the fourth quadrant.
Given we're in the fourth quadrant, the reference angle is 360 - 300 = 60 degrees
sin(60°) =
And since sine is negative, this value turns negative:
sin(300°) = 