Grade 11 QUESTION 1 You are the harbour master of Strand beach. People coming into and out of the harbo need to know in advance about the behaviour of the tides. Fishing vessels and boat tours depend on the tides. Tides are caused by extraction of the sun and moon on the oceans and upon the rotation of the earth. However, the exact tidal pattern at a coastal location is also strongly influenced by the shape of the coastline and the profile of the nearby se floor. The given graph represents the recording of the tide heights at Strand over a period of time, 12:30am to 10:00pm, we will use this graph and predict future tides. Analyze the data: Follow the instructions to find the equation of the cosinusoid that best fits the given graph. Use the general form y = a cos(bx − p) + q. Thursday, 1 February 2024 12:00am 0.6m 12:30am 0.6m ▼ ▼ Low High Low High 3am 6:53am 1.0m бот 12:30am 6:53am 1:11pm Investigat 7:11pm 9am 0.6m 1.6m 1:11pm 0.7m 1.4m Noon First Light Sunrise 0.7m Sunset 3pm Last Light 7:11pm 1.4m 6pm 9pm 5:39am 6:06am 7:52pm 8:19pm

. 1.2 Calculate the average minimum height of the graph between 12:30am and 7:11pm.
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