A sine curve/sine wave looks like a long half moon with another running over it starting in approximately the middle of the first and continuing. Wish I could draw how it looks on an oscilliscope Draw a long mound on a paper several times connected together. The go back to the first mound and start the same mound line in the middle of the first and loop over the next,etc.etc
It looks like a circle that is bisected into 2 semicircles, then had the top semicircle rotated 180 degrees such that both semicircles are connected at only one point.
Aaarrghhh!
You can plot it using a construction based on a circle divided into segments, from the intersections of radii and circumference. Alternatively plot it as amplitude against angle using a scientific calculator or sine table: for one complete cycle of the wave the turning-points are 1 and -1 at 90 and 270 degrees respectively, it equals 0 at 0, 180 and 360 degrees.
Or use Excel!
It does NOT look like 2 semicircles at all! It is not a set of circular arcs! The curve starts concave, becomes almost straight for an infinitesimal section then goes convex as it approaches the turning-point.
Simple ripples on a pond, or deep ocean swell unaffected by local wind, follow the same form.
Basically, it IS a curve.
Cosine
The sine curve is exactly the same as the cosine curve shifted pi/2 radians to the left
The angle.
Sound waves are transmitted through a medium as variations in the pressure of the medium. If the variation is plotted as a function of distance (or time), they will generate a sine curve (the cosine curve is the same as a sine curve with a phase shift). In practise, the sine curve is damped: the amplitude (or height) of the oscillations gradually decrease over time or distance, because of attenuation.
Basically, it IS a curve.
Cosine
The sine curve is exactly the same as the cosine curve shifted pi/2 radians to the left
The angle.
In physics, a sine curve is used to represent periodic phenomena such as simple harmonic motion or alternating current. It shows how a quantity varies sinusoidally with time or distance. The amplitude, frequency, and phase of the sine curve provide important information about the behavior of the system being studied.
Try and show this as well as you can: Think of a wheel, or whatever that is cylinder-shaped. One point on the wheel's base is our aim of attention. If you look at the wheel from the side, and roll it at a constant speed, one point on the wheel makes a sine curve. You could illustrate by adding something that leaves a trail to a cylinder. Like gluing a piece of chalk on a scroll of tape. Then roll the scroll next to a blackboard, and the result should be a sine curve, where the amplitude is the same as the radius of the scroll.
Sound waves are transmitted through a medium as variations in the pressure of the medium. If the variation is plotted as a function of distance (or time), they will generate a sine curve (the cosine curve is the same as a sine curve with a phase shift). In practise, the sine curve is damped: the amplitude (or height) of the oscillations gradually decrease over time or distance, because of attenuation.
The sine wave is also called a sinusoid is a mathematical curve that describes the smooth repetitive oscillation.
One way is to shift it to the left by a quarter of the period.
The curve is shifted to the right by c.
If you mean the sine function, it is dependent on an angle. For example, the sine of an angle of zero degrees is zero; the sine of an angle of 90 degrees is one; for an angle of 180 degrees, the sine is again 0; if you make a graph, you get a curve that looks like a wave. In general, the values the sine function can take are between 1 and -1, inclusive.
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