Asked by Melinda
Verify these answers
1.Which of the six trigonometric functions are positive in quadrant III?
Answer: tangent and cotangent
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2. What is the amplitude of the function y = pi/2 sin(6/3t - pi/6) + 14?
Amplitude: pi/2
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3. What is the function of cos that has an amplitude of 4, a period of 2pi and has a point at (0,2)?
Answer: y=4cos(x-0) + 2
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4. The height of a swing is modelled by the function h(t) 35sin(8pi x t)+74. What are the highest and lowest points the ball reaches where h(t) is in cm?
1.Which of the six trigonometric functions are positive in quadrant III?
Answer: tangent and cotangent
--------------------------------------
2. What is the amplitude of the function y = pi/2 sin(6/3t - pi/6) + 14?
Amplitude: pi/2
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3. What is the function of cos that has an amplitude of 4, a period of 2pi and has a point at (0,2)?
Answer: y=4cos(x-0) + 2
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4. The height of a swing is modelled by the function h(t) 35sin(8pi x t)+74. What are the highest and lowest points the ball reaches where h(t) is in cm?
Answers
Answered by
Steve
when x=0, cos(0) = 1
so you want
y = 4cos(x) - 2
74 ± 35
so you want
y = 4cos(x) - 2
74 ± 35
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