Question 971760
the height of the water H in feet at a boat dock t hours after 6 a.m. is given by H=10+sin pi/4 t. what is the height of the water at 10 a.m. ? 
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t = 10-6 = 4
h = 10 + sin(pi*t/4) = 10 + sin(pi)
h = 10 feet