SOLUTION: If at rest the human heart beats once every second then what is the trigonometric equation for maximum blood pressure is 120mmHg, minimum blood pressure is 80mmHg and t=0 corresp

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Question 872862: If at rest the human heart beats once every second then what is the trigonometric equation for maximum blood pressure is 120mmHg, minimum blood pressure is 80mmHg and t=0 corresponds to the peak of the beat. also sketch the blood pressure over two heart beats.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If at rest the human heart beats once every second then what is the trigonometric equation for maximum blood pressure is 120mmHg, minimum blood pressure is 80mmHg and t=0 corresponds to the peak of the beat. also sketch the blood pressure over two heart beats.
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Draw the picture.
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average pressure is (120+80)/2 = 100
So amplitude = 120-100 = 20
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vertical shift = 100
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Period = 1 second
So, 1 = (2pi)/b
b = 2pi
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Cosine is maximum at t = 0
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Equation:
y = 20*cos(2pix)+100
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graph%28400%2C400%2C-2%2C2%2C-10%2C140%2C20cos%282pi%2Ax%29%2B100%29
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Cheers,
Stan H.
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