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Here is the graph of a trigonometric function.
Which equation has this graph? Select all that apply.
\(y=\frac{3}{2} \cos\left (2\pi x - \frac{\pi}{2}\right)\)
\(y=\text-\frac{3}{2}\sin(2\pi x)\)
\(y=\frac{3}{2}\cos(2\pi x)\)
\(y=\frac{3}{2} \cos\left (2\pi x + \frac{\pi}{2}\right)\)
\(y=\frac{3}{2} \sin(2\pi x + \pi)\)
Here is the graph of a trigonometric function.
Which equation has this graph?
\(y=\cos(x) + 1\)
\(y=\frac{1}{2}\cos(x) + 1\)
\(y=\frac{1}{2}\cos(\pi \boldcdot x) + 1\)
\(y=\frac{1}{2} \cos(2\pi \boldcdot x) + 1\)
Here is the graph of a trigonometric function.
The function \(f\) is given by \(f(x) = 4 + 2\sin\left(\pi x\right)\). The graph of \(g\) is the graph of \(f\) translated left by \(\frac{\pi}{2}\) and translated vertically by -1. Which expression defines \(g\)?
\(5 + 2\sin\left(\pi x + \frac{\pi}{2}\right)\)
\(3 + 2\sin\left(\pi x + \frac{\pi}{2}\right)\)
\(3 + 2\sin\left(\pi \left(x-\frac{\pi}{2}\right)\right)\)
\(3 + 2\sin\left(\pi \left( x + \frac{\pi}{2}\right)\right)\)
Here are graphs of trigonometric functions \(f\) and \(g\). What transformations can be applied to the graph of \(f\) to get the graph of \(g\)? Make sure to list them in the order they are applied.
The table shows the vertical position of a point at the tip of a windmill blade after the blade has rotated through different angles. The point starts at the location furthest to the right.
| rotation angle of windmill |
vertical position of \(P\) in feet |
|---|---|
| \(\frac{\pi}{6}\) | 11.25 |
| \(\frac{\pi}{3}\) | 10 + \(\frac{2.5\sqrt{3}}{2}\) |
| \(\frac{\pi}{2}\) | 12.5 |
| \(\pi\) | 10 |
| \(\frac{3\pi}{2}\) | 7.5 |
The function \(f\) is given by \(f(\theta) = 6 +5\cos\left(\theta + \frac{\pi}{2}\right)\). Which of the following are true of \(f\)? Select all that apply.
The amplitude of \(f\) is 6.
The function \(f\) takes its maximum value when \(x = 0\).
The midline of \(f\) is 6.
The graph of \(f\) is the same as the graph of \(g(\theta) = 6+ 5\cos(\theta)\) translated to the right by \(\frac{\pi}{2}\).
The graph of \(f\) is the same as the graph of \(g(\theta) = 6+ 5\cos(\theta)\) translated to the left by \(\frac{\pi}{2}\).
A parabola has been transformed from \(y=x^2\) by stretching vertically by a factor of \(\frac43\), shifting up 4, and shifting right 7.