Cos of 2pi/3

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Cos of 2pi/3

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Joined Feb 4, Messages 16, My results do not look right and I was not able to do the correct approximation.

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We must now determine the reference angle for degrees. Since degrees is in quadrant II, the reference angle is found by using the expression - theta , where theta is the angle in degrees. Calculating we get a reference angle of 60 degrees. We must now apply our knowledge of the special triangles to continue. The special triangle that contains 60 degrees is the degrees, that has side lengths of 1, sqrt 3 and 2 , respectively. So, the hypotenuse measures 2, the side opposite our angle measures sqrt 3 and the side adjacent measures 1.

Cos of 2pi/3

Cos 2pi gives the value of the cosine function when the angle made with the positive x-axis is 2pi, that is, one complete rotation. The value of cos 2pi is one such value and can be found using different methods. In this article, we will determine the value of cos 2pi as 1 using various methods along with some examples. So, the value of cos 2pi is equal to the value of cos 0 which is 1. So, cos 2pi is equal to 1. Now, we will use some of these values to determine the value of cos 2pi using different methods such as graphically, standard angles, unit circle, and double angle formula. Given below is the graph of cos x.

Tanysha dissanayake

What are your basic reference angles? All you did was ask questions How can I come to this answer? What kind of answers are those? I manage to do it right, but I would not be able to find how many terms, considering the general taylor series formula. Log in Register. My results do not look right and I was not able to do the correct approximation. MathWorks Answers Support. An Error Occurred Unable to complete the action because of changes made to the page. Search Advanced search….

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Cancel Copy to Clipboard. It may not display this or other websites correctly. What does the cosine wave look like? Can somebody help me? Select a Web Site Choose a web site to get translated content where available and see local events and offers. Search forums. What are the basic reference-angle values? Trial software. All you did was ask questions You could find the number of terms in the array by using :. Thiago Augusto Borges Rodrigues on 9 Jan Joined Feb 4, Messages 16,