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What are the important points you are to use in graphing the cosine function?
Wiki User
∙ 9y ago
The basic cosine function is bounded by -1 and 1. It is a periodic function with a period of 2*pi radians (360 degrees).
cos(0) = 1, cos(pi/2) = 0, cos(pi) = -1, cos(3pi/2) = 0, cos(pi) = 1. In between these values it forms a smooth curve. Also, it may help to understand that when the curve crosses the x-axis, its slope is 1 or -1.
Wiki User
∙ 9y ago
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Why is graphing a good took for representing data?
It gives a good visual represtation. like in pre-calculus graphing is important because it helps to determine the domian and range of sin, cosine, and tangent waves and helps with points. but overall its easier to see and understand
Why is it important to start at the origin when you are graphing points?
It is important for beginners because the coordinates of the graphing points are measured from the origin. More expert users don't need to do so.
What is the point of graphing a trig function (sin cos etc.)?
The functions are periodic and so, given any value (within the range) the function can take the value several times, Graphing the function can help you determine secondary points at which the function takes a given value.
What is a graphing utility?
A graph with points
What are the 3 cases that might arise when graphing a linear and quadratic function on same grid?
They intercept at:no pointsone point onlytwo points.
Why is the origin important when graphing points on the coordinate plane?
It is because all measurements are taken from that point: it is the fixed point of reference.
Graphing is an important tool for expressing and interpreting results in chemistry what is a not a requirement for a properly formatted graph?
Data points must be evenly spaced.
Why cos negative results positive?
It doesn't really. Depending on the exact value of the argument, the cosine function can give both positive and negative results, for a negative argument. As to "why" the sine, or cosine, functions have certain values, just look at the function definition. Take points on a unit circle. The sine represents the y-coordinate for any point on the circle, while the cosine represents the x-coordinate for such a point. (There are also other ways to define the sine and the cosine functions.)
What are the zeros in sine and cosine function?
A "zero of a function" is a point where the dependent value (usually, Y) is zero. In the function f(x) = x2 - 2, for example, there are zeroes at -1.414 and +1.414.The zeroes of the sine function are at all integer multiples of pi, i.e. 0, pi, 2pi, 3pi, etc. The zeroes of the cosine function are at the same points plus pi/2, i.e. pi/2, 3pi/2, 5pi/2, etc.Another way to look at this is that the zeroes of sine are the even multiples of pi/2, and the zeros of cosine are the odd multiples of pi/2.
What is the purpose of graphing a circle?
Truthfully the purpose of graphing a circle helps to show the points in a data set. If you're also going to shade, by graphing a circle you save time in functionality to figure out what and where your data sets will be.
How do graphs help you understand functions?
Typically, functions are graphed on x-y coordinates. A function of x means that for every x point, there must be a single y point. You can also many properties by graphing a function, such as the minimum and maximum points, slopes and inflection points, and the inverse of the function (y values plotted on x coordinate, and x values on y coordinate).
What is meant by DCT?
A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies
