cos(2x)=
The cosine of 2x can be found using the double angle identity for cosine
The cosine of 2x can be found using the double angle identity for cosine. The double angle identity states that cos(2x) = cos^2(x) – sin^2(x).
Using this identity, we can rewrite cos(2x) as follows:
cos(2x) = cos^2(x) – sin^2(x)
So, the value of cos(2x) is equivalent to the difference between the square of the cosine of x and the square of the sine of x.
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