# cosine
Cos 2x Formula
cos 2x = cos² x - sin² x = 2.cos² x - 1 = 1 - 2.sin² x.
Published At:
August 06, 2024
Derivative of Cos x
The derivative of cos x is -sin x.
Published At:
June 11, 2024
Derivative of Cos u
The derivative of cos u is -u'.sin u.
Published At:
June 14, 2024
Derivative of Cos 2x
The derivative of cos 2x is -2.sin 2x.
Published At:
July 19, 2024
Derivative of Cos ax
The derivative of cos ax is -a.sin ax.
Published At:
July 15, 2024
Integral of Cos x
The integral of cos x is sin x+c.
Published At:
December 29, 2024
Derivative of 1/Cos x
The derivative of 1/cos x is sec x.tan x.
Published At:
January 12, 2025
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