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## Homework Statement

The height, h, in metres, of the tide in a given location on a given day at t hours after midnight can be modelled using the sinusoidal function h(t)= 5 sin 30 (t-5) + 7

(A) find max and min value for depth of water.

(B) what time is high tide? What time is low tide?

(C) what is the depth of the water at 9:00am?

## Homework Equations

## The Attempt at a Solution

(A) The maximum would be 12 because 5 + 7. The minimum would be 2 because 7-5.

However when it comes to questions b and c I have no idea what to do or where to even begin.