Q-ID: 76215
A-ID:
The depth of water, `D` metres, in a harbour, `h` hours after midnight, is given by the formula:
`D = 3 + 2sin(30h)`
A boat can only leave the harbour when the water depth is greater than `4` metres.
What is the last time in the day that the boat can leave?
Your Answer:
You did not answer this question.