To compute cos(X*pi) accurately, without using pi as a floating-point approximation of π, you can use the cospi function instead. For example, cospi(m/2) is exactly zero for odd integers m and cospi(n) is +1 or –1 for integers n.

The trigonometric functions in MATLAB ® calculate standard trigonometric values in radians or degrees, hyperbolic trigonometric values in radians, and inverse variants of each function. You can use the rad2deg and deg2rad functions to convert between radians and degrees, or functions like cart2pol to convert between coordinate systems.

Compute the cosine function for the numbers converted to symbolic objects. For many symbolic (exact) numbers, cos returns unresolved symbolic calls.

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Y = acos(X) returns the Inverse Cosine (cos -1) of the elements of X in radians. The function accepts both real and complex inputs.

2020年6月18日 · HOW to write cos^2 (t) in matlap. Learn more about matlab, miscatagorized

2015年3月22日 · Can someone tell me how you would plot a cos function into matlab so that you can see a few periods of the graph? I am trying to graph v(t)= 5.6576cos(377t+44.9945) where the 44.9945 is the...

2016年9月20日 · You could pick a random constant like 0.01 in @ptev 's answer, or you could pick a certain number of points by using something like. x = [0 : 2*pi/100 : 2*pi]; 2) pi is a constant in MATLAB- not only is it inadvisable to have a variable with the same name as a constant; you're actually making your code less accurate. Delete the line pi = 3.14.

This MATLAB function returns the cosine for each element of X.

2011年5月29日 · Hello, i calculated the value of sin (45) in Matlab, the result was sin (45)=0.8509 and for cosin i got cos (45)= 0.5253. From general mathematics we know that sin (45)=cos (45) then why Matlab is giving different results??