cosd

Arguments

x

a real vector/matrix.

Description

For a vector or a matrix x of angles given in degree, cosd(x) is the cosine of its elements. The results are in [-1 1]. For input elements which are equal to n*90 with n integer and odd, the result is exactly zero.

Sample

Examples

cosd([0 30 45 60 90 360]) 1 ./ cosd([-90 90])

--> cosd([0 30 45 60 90 360])
 ans  =
   1.   0.8660254   0.7071068   0.5   0.   1.

--> 1 ./ cosd([-90 90])
 ans  =
   Inf   Inf

See also

• acosd — element wise cosine inverse, result in degree.
• cos — cosine function
• acos — element wise cosine inverse (radians)
• cosh — hyperbolic cosine
• acosh — hyperbolic cosine inverse