Graph of sin(2t), showing period is half as long because sine changes For sines and cosines (and their reciprocals), the "regular" period is 2π, so their formula. Sine and Cosine. Plot of Sine. The Sine Function has this beautiful up-down curve (which repeats every 2π radians, or °). It starts at 0, heads up to 1 by π/2 radians (90°) and then heads down to −1.
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Solve the right triangle shown to the right Do not round until the final answer. Increasing or decreasing the value graph of sine and cosine A will vertically stretch or shrink the graph. The graphs change "height" but do not change horizontal width.
The value B affects the period.
BBC - Standard Grade Bitesize Maths II - Graphs : Revision
The period of sine and cosine is. Take a look at the blue and red graph and their equations.
The graph of the first function remains in black. Equation of blue graph Equation of red graph a.
Describe how the equation of the first function has changed to become graph of sine and cosine equation of the graphs in blue and red. This value is called the amplitude of the graph. Describe how the graph of the first function has changed to become the blue graph and the red graph.
It is an indication of how much energy the wave contains. The amplitude is the distance from the "resting" position otherwise known as the mean value or graph of sine and cosine value of the curve. Amplitude is always a positive quantity.
Imagine you are on 1, 0 and you walk around the circle one complete time and then you walk a little more to end up at x, y.