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## Homework Statement

h(t) = 3 + 2sin(0.5236t)

h = depth in meters (water)

t = number of hours after 7

1) A certain ship can only enter the harbor if the depth is 4.5m or more. For how long can this ship stay at the harbor?

## Homework Equations

## The Attempt at a Solution

I tried getting both of the sine solutions 1.619 and 2.293. I substracted the former from the latter but that didn't work. Can anyone point me in the right direction?