Phase Angle Graph Calculator

Graph shifted sine or cosine waves with clear values. Study phase behavior with quick exports and visual comparisons.

Calculator Input

Phase Angle Graph

Calculated Data Table

X Argument Degrees Argument Radians Y Value
0 30 0.523599 0.5
10 40 0.698132 0.642788
20 50 0.872665 0.766044
30 60 1.047198 0.866025
40 70 1.22173 0.939693
50 80 1.396263 0.984808
60 90 1.570796 1
70 100 1.745329 0.984808
80 110 1.919862 0.939693
90 120 2.094395 0.866025
100 130 2.268928 0.766044
110 140 2.443461 0.642788
120 150 2.617994 0.5
130 160 2.792527 0.34202
140 170 2.96706 0.173648
150 180 3.141593 0
160 190 3.316126 -0.173648
170 200 3.490659 -0.34202
180 210 3.665191 -0.5
190 220 3.839724 -0.642788
200 230 4.014257 -0.766044
210 240 4.18879 -0.866025
220 250 4.363323 -0.939693
230 260 4.537856 -0.984808
240 270 4.712389 -1
250 280 4.886922 -0.984808
260 290 5.061455 -0.939693
270 300 5.235988 -0.866025
280 310 5.410521 -0.766044
290 320 5.585054 -0.642788
300 330 5.759587 -0.5
310 340 5.934119 -0.34202
320 350 6.108652 -0.173648
330 360 6.283185 0
340 370 6.457718 0.173648
350 380 6.632251 0.34202
360 390 6.806784 0.5

The visible table shows up to 60 rows. CSV export includes all generated rows.

Example Data Table

Amplitude Frequency Phase Angle Vertical Shift Equation
2 1 30° 0 y = 2 sin(x + 30°)
3 2 45° 1 y = 3 sin(2x + 45°) + 1
1.5 0.5 -60° -2 y = 1.5 cos(0.5x - 60°) - 2

Formula Used

The calculator uses the standard shifted wave equation:

y = A sin(Bx + φ) + D or y = A cos(Bx + φ) + D

Here, A is amplitude. B is the frequency multiplier. φ is the phase angle. D is the vertical shift.

The horizontal phase shift is:

Phase shift = -φ / B

The period in degrees is:

Period = 360 / |B|

How to Use This Calculator

Enter the amplitude to control wave height. Add the frequency multiplier to set how fast the wave repeats.

Enter the phase angle in degrees. Positive phase values move many sine graphs left. Negative values usually move them right.

Add a vertical shift when the graph center line is not zero. Then choose the graph range, step size, unit, and wave type.

Press the calculate button. The result summary appears above the form. The graph and table update below.

Understanding Phase Angle Graphs

What a Phase Angle Shows

A phase angle tells where a repeating wave starts in its cycle. It is common in trigonometry, signals, physics, and engineering. A wave can have the same shape but start earlier or later. That change is called a phase shift.

Why the Graph Matters

A number alone can be hard to read. A graph shows the shift clearly. You can see peaks, troughs, intercepts, and the midline. This helps compare two waves quickly. It also helps students understand sine and cosine motion.

Important Inputs

Amplitude controls the height of the wave. Frequency controls how many cycles appear in the same interval. The phase angle controls horizontal movement. The vertical shift moves the whole graph up or down. Together, these values create a complete transformed wave.

Reading the Output

The result area shows phase angle in degrees and radians. It also shows horizontal shift, period, peak, and trough. The table lists each x value and its matching y value. This is useful for plotting points manually.

Practical Uses

Phase angle graphs are used in alternating current analysis. They also appear in sound waves, vibration, seasons, and rotations. In mathematics, they help explain transformations of trigonometric functions. In data work, they help model repeating patterns.

Exporting Results

Use CSV export for spreadsheets. Use PDF export for reports or homework notes. The graph gives a visual check. The table gives exact values. Both are helpful for review, sharing, and documentation.

FAQs

1. What is a phase angle?

A phase angle shows how far a wave is shifted within its cycle. It is usually measured in degrees or radians.

2. What does a positive phase angle do?

For y = sin(Bx + φ), a positive phase angle often shifts the graph left by φ divided by B.

3. What does amplitude mean?

Amplitude is the distance from the center line to a peak or trough. Larger amplitude makes the graph taller.

4. How is phase shift calculated?

Phase shift is calculated as negative phase angle divided by frequency multiplier. The formula is -φ / B.

5. Can I graph cosine waves too?

Yes. Choose cosine from the wave type field. The calculator will use the cosine version of the equation.

6. Why convert degrees to radians?

Most programming math functions use radians. The calculator converts degrees internally when needed for accurate graph values.

7. What is the period of the wave?

The period is the length of one full cycle. In degrees, it equals 360 divided by the absolute frequency multiplier.

8. What does vertical shift change?

Vertical shift moves the complete graph upward or downward. It changes the midline but not the wave shape.

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